Charizard 1st Edition ShadowlessBASPSA 10$400,92211.1%

Aerodactyl ex HoloESSPSA 10$4,0650.0%

Dark Charizard 1st EditionTROPSA 9$2,5132.2%

Mega Charizard X ex HoloPHFPSA 10$2,1050.0%

Suicune 1st EditionNRVPSA 9$1,90521.4%

Charizard UnlimitedBASPSA 8$1,2840.8%

Blaine's Arcanine 1st EditionGYCPSA 9$1,1556.4%

Espeon HoloAQPPSA 8$1,1050.1%

Houndoom 1st EditionNRVPSA 8$1,04222.1%

Misty's Gyarados 1st EditionGYCPSA 9$8851.9%

Slowking HoloNEOPSA 9$8774.5%

Crobat HoloSKRPSA 9$8464.2%

Snorlax HoloJUNPSA 9$7922.0%

Charmander HoloMEWPSA 10$6650.2%

Dark Charizard HoloTROPSA 8$5263.5%

Charmeleon HoloMEWPSA 10$5120.5%

Blaine's Moltres 1st EditionGYHPSA 8$5013.4%

Giovanni's Gyarados HoloGYCPSA 9$4200.8%

Sabrina's Alakazam 1st EditionGYCPSA 8$4093.7%

Dark Machamp 1st EditionTROPSA 9$3625.3%

Mew ex HoloMEWPSA 10$3292.6%

Meganium HoloNEOPSA 9$3280.3%

Dragonite HoloFOSPSA 8$3083.3%

Machamp 1st Edition ShadowlessBASPSA 9$3046.8%

Neo Genesis · 1st Edition

Typhlosion #18, 1st Edition, Neo Genesis

Neo Genesis 1st EditionNEO18F:EN

TKRNEO18F:EN-P9

TCGBerg fair value· PSA 9

$780

Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.

Data quality excellent96/100

30D performance0.9%

30D↑ 0.9%

YTD↑ 47.2%

MCAP$693.7K

VOL2.9%

Last sale (Aug 5, 2026)Last sale

$700

PSA 9 · Aug 5, 2026

10.3% below TCGBerg fair value

5-sale avg

$730

last 5 sales

Population · PSA 9

913

graded copies

TCGBerg fair value · PSA 9

$780

30D0.9%YTD47.2%

Data quality excellent96/100

Market cap

$693.7K

fair value x population

Population

913

graded copies

Last sale

$700

-10.3% vs fair

5-sale avg

$730

recent sales

Price history

Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales.

TCGBerg fair value · PSA 9Sale below fairSale above fairOutlier

Aug 17, 202552 weekly points · 74 salesAug 9, 2026

Neo Genesis · 1st Edition

Typhlosion #18, 1st Edition, Neo Genesis

Neo Genesis 1st EditionNEO18F:EN

TKRNEO18F:EN-P9

TCGBerg fair value· PSA 9

$780

Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.

Data quality excellent96/100

30D performance0.9%

30D↑ 0.9%

YTD↑ 47.2%

MCAP$693.7K

VOL2.9%

Last sale (Aug 5, 2026)Last sale

$700

PSA 9 · Aug 5, 2026

10.3% below TCGBerg fair value

5-sale avg

$730

last 5 sales

Population · PSA 9

913

graded copies

TCGBerg fair value · PSA 9

$780

30D0.9%YTD47.2%

Data quality excellent96/100

Market cap

$693.7K

fair value x population

Population

913

graded copies

Last sale

$700

-10.3% vs fair

5-sale avg

$730

recent sales

Price history

Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales.

TCGBerg fair value · PSA 9Sale below fairSale above fairOutlier

Aug 17, 202552 weekly points · 74 salesAug 9, 2026

Active listings on eBay

PSA 9 · eBay

Affiliate links: TCGBerg may earn a commission on purchases made through these listings.

Recent sales10 tracked

Most recent transactions. From public auction comps and dealer reporting. Showing 10 of 10; delta vs fair value is the difference between the sale price and the grade's quoted fair value on that date.

Date	Grade	Price	Source	vs TCGBerg FV
Aug 5, 2026	PSA9	$700	ebay	10.3%
Aug 3, 2026	PSA9	$750	ebay	3.8%
Jul 28, 2026	PSA9	$800	ebay	1.8%
Jul 27, 2026	PSA9	$650	ebay	17.3%
Jul 25, 2026	PSA9	$750	ebay	7.9%
Jul 24, 2026	PSA9	$881	ebay	8.2%
Jul 14, 2026	PSA9	$950	ebay	16.5%
Jul 8, 2026	PSA9	$745	ebay	2.4%
Jul 6, 2026	PSA9	$1,000	ebay	30.9%
Jul 3, 2026	PSA9	$733	ebay	3.0%

$700
Aug 5, 2026 · via ebay
PSA 9versus fair value, down 10.3%
$750
Aug 3, 2026 · via ebay
PSA 9versus fair value, down 3.8%
$800
Jul 28, 2026 · via ebay
PSA 9versus fair value, up 1.8%
$650
Jul 27, 2026 · via ebay
PSA 9versus fair value, down 17.3%
$750
Jul 25, 2026 · via ebay
PSA 9versus fair value, down 7.9%
$881
Jul 24, 2026 · via ebay
PSA 9versus fair value, up 8.2%
$950
Jul 14, 2026 · via ebay
PSA 9versus fair value, up 16.5%
$745
Jul 8, 2026 · via ebay
PSA 9versus fair value, down 2.4%
$1,000
Jul 6, 2026 · via ebay
PSA 9versus fair value, up 30.9%
$733
Jul 3, 2026 · via ebay
PSA 9versus fair value, down 3.0%

All grades matrix

Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.

PSA10$4,689
1d 0.0%7d 6.5%30d 6.7%
Pop
151
Mcap
$785.4K
Conf
79
Last
$5,400
PSA9$780
1d 0.0%7d 0.7%30d 0.9%
Pop
913
Mcap
$693.7K
Conf
96
Last
$700
PSA8$458
1d 0.3%7d 2.8%30d 2.8%
Pop
709
Mcap
$324.0K
Conf
92
Last
$445


PSA10	$4,689	151	$785.4K	0.0%	6.5%	6.7%	33.3%	-	79	$5,4003w ago
PSA9	$780	913	$693.7K	0.0%	0.7%	0.9%	0.5%	-	96	$7001w ago
PSA8	$458	709	$324.0K	0.3%	2.8%	2.8%	4.7%	-	92	$4451w ago
PSA7	$394	380	$148.7K	0.2%	12.1%	6.6%	27.7%	-	91	$3751w ago
PSA6	$360	260	$88.5K	0.5%	6.4%	7.1%	64.7%	-	64	$3802mo ago
Raw	-	-	-	-	-	-	-	-	-	-

Price spectrum

Where the current price sits relative to recent sales and active listings, and how each reference point compares to TCGBerg fair value. The bar spans $511 to $1.6K; it shades green below fair value to red above, saturating at ±25%.

TCGBerg fair value

$780

−25%

$585

$780

+25%

$975

+103%

$1.6K

$511$780$1.6K

LowFairHigh

Last sale
$700
10.3% below fairAug 5, 2026
Lowest ask
$778
0.3% below fairlowest active ask
Median ask
$1.0K
29.1% above fairmedian active ask
Highest ask
$1.5K
93.1% above fairhighest active ask

Last sale was 10.3% below TCGBerg fair value, the best listing right now sits 0.3% below fair.

TCGBerg fair value by grade

Value at each grade and ungraded condition, on a log scale that spans the full range from the lowest grade at $360 up to gem-mint at $4.7K. Log scale. Tap a row to switch the whole page.

Population & rarity

2,413 graded copies of Typhlosion 1st Edition across 5 grades. The selected grade is highlighted.

PSA 10

151 · 6.3%

PSA 9

913 · 38%

PSA 8

709 · 29%

PSA 7

380 · 16%

PSA 6

260 · 11%

PSA 9 makes up 38% of graded copies: 913 of 2,413. It’s the most common grade for this card.

Relative valuation vs. index

How PSA 9 has moved relative to Neo Genesis · 1st Edition · Composite since May 17, 2026. Both indexed to 100 at the index’s inception. Card underperformed by 2.2 pp.

About Neo GenesisParent set

This printing in the context of its parent set: total set cap and this printing's share of it.

Browse all sets →

Set total cap

$84.14M

across all printings

This printing's share

2.4%

of total set cap

Implied printing cap

$2.04M

share × set cap

Browse all sets →

Typhlosion - 1st Edition Holo at PSA 10 carries a TCGBerg fair value of $4,689 as of 2026-08-09. We track a TCGBerg fair value across 5 grades from Neo Genesis, from PSA 6 up to PSA 10. A graded population of 151 copies sits behind the PSA 10 grade. The PSA 10 valuation carries high confidence (a confidence score of 79). Over the past 30 days, the PSA 6 TCGBerg fair value has risen 7.1%.

Show more analysisAnalysis, commentary & FAQ

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Typhlosion - 1st Edition Holo is $4,689 as of 2026-08-09. 151 copies have been graded at this level. This valuation carries high confidence (a confidence score of 79). Over the past 30 days the TCGBerg fair value has fallen 6.7%. The most recent recorded sale was $5,400 on 2026-07-27.

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Typhlosion - 1st Edition Holo?

$4,689 as of 2026-08-09, our model-derived fair value for a PSA 10 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 10 Typhlosion - 1st Edition Holo?

151 copies have been graded at PSA 10, the graded population behind this atom.

How has the PSA 10 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 6.7% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Typhlosion - 1st Edition Holo?: $4,689 as of 2026-08-09, our model-derived fair value for a PSA 10 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 10 Typhlosion - 1st Edition Holo?: 151 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 6.7% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Typhlosion - 1st Edition Holo is $780 as of 2026-08-09. 913 copies have been graded at this level. This valuation carries very high confidence (a confidence score of 96). Over the past 30 days the TCGBerg fair value has risen 0.9%. The most recent recorded sale was $700 on 2026-08-05.

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Typhlosion - 1st Edition Holo?

$780 as of 2026-08-09, our model-derived fair value for a PSA 9 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 9 Typhlosion - 1st Edition Holo?

913 copies have been graded at PSA 9, the graded population behind this atom.

How has the PSA 9 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 0.9% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Typhlosion - 1st Edition Holo?: $780 as of 2026-08-09, our model-derived fair value for a PSA 9 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 9 Typhlosion - 1st Edition Holo?: 913 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 0.9% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Typhlosion - 1st Edition Holo is $458 as of 2026-08-09. 709 copies have been graded at this level. This valuation carries very high confidence (a confidence score of 92). Over the past 30 days the TCGBerg fair value has risen 2.8%. The most recent recorded sale was $445 on 2026-08-04.

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Typhlosion - 1st Edition Holo?

$458 as of 2026-08-09, our model-derived fair value for a PSA 8 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 8 Typhlosion - 1st Edition Holo?

709 copies have been graded at PSA 8, the graded population behind this atom.

How has the PSA 8 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 2.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Typhlosion - 1st Edition Holo?: $458 as of 2026-08-09, our model-derived fair value for a PSA 8 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 8 Typhlosion - 1st Edition Holo?: 709 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 2.8% over the past 30 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Typhlosion - 1st Edition Holo is $394 as of 2026-08-09. 380 copies have been graded at this level. This valuation carries very high confidence (a confidence score of 91). Over the past 30 days the TCGBerg fair value has risen 6.6%. The most recent recorded sale was $375 on 2026-08-07.

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Typhlosion - 1st Edition Holo?

$394 as of 2026-08-09, our model-derived fair value for a PSA 7 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 7 Typhlosion - 1st Edition Holo?

380 copies have been graded at PSA 7, the graded population behind this atom.

How has the PSA 7 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 6.6% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Typhlosion - 1st Edition Holo?: $394 as of 2026-08-09, our model-derived fair value for a PSA 7 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 7 Typhlosion - 1st Edition Holo?: 380 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 6.6% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Typhlosion - 1st Edition Holo is $360 as of 2026-08-09. 260 copies have been graded at this level. This valuation carries high confidence (a confidence score of 64). Over the past 30 days the TCGBerg fair value has risen 7.1%. The most recent recorded sale was $380 on 2026-06-17.

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Typhlosion - 1st Edition Holo?

$360 as of 2026-08-09, our model-derived fair value for a PSA 6 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 6 Typhlosion - 1st Edition Holo?

260 copies have been graded at PSA 6, the graded population behind this atom.

How has the PSA 6 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 7.1% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Typhlosion - 1st Edition Holo?: $360 as of 2026-08-09, our model-derived fair value for a PSA 6 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 6 Typhlosion - 1st Edition Holo?: 260 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 7.1% over the past 30 days.

Other printings of Typhlosion and indices that include this card in their constituent basket.

Other printings of Typhlosion

Typhlosion - Unlimited$1,821

Indices containing this card

Parent set

Neo Genesis

Set total cap

$66.12M

About Neo GenesisParent set

This printing in the context of its parent set: total set cap and this printing's share of it.

Browse all sets →

Set total cap

$84.14M

across all printings

This printing's share

2.4%

of total set cap

Implied printing cap

$2.04M

share × set cap

Browse all sets →

Show more analysisAnalysis, commentary & FAQ

PSA 10 commentary

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Typhlosion - 1st Edition Holo?

$4,689 as of 2026-08-09, our model-derived fair value for a PSA 10 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 10 Typhlosion - 1st Edition Holo?

151 copies have been graded at PSA 10, the graded population behind this atom.

How has the PSA 10 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 6.7% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Typhlosion - 1st Edition Holo?: $4,689 as of 2026-08-09, our model-derived fair value for a PSA 10 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 10 Typhlosion - 1st Edition Holo?: 151 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 6.7% over the past 30 days.

PSA 9 commentary

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Typhlosion - 1st Edition Holo?

$780 as of 2026-08-09, our model-derived fair value for a PSA 9 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 9 Typhlosion - 1st Edition Holo?

913 copies have been graded at PSA 9, the graded population behind this atom.

How has the PSA 9 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 0.9% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Typhlosion - 1st Edition Holo?: $780 as of 2026-08-09, our model-derived fair value for a PSA 9 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 9 Typhlosion - 1st Edition Holo?: 913 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 0.9% over the past 30 days.

PSA 8 commentary

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Typhlosion - 1st Edition Holo?

$458 as of 2026-08-09, our model-derived fair value for a PSA 8 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 8 Typhlosion - 1st Edition Holo?

709 copies have been graded at PSA 8, the graded population behind this atom.

How has the PSA 8 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 2.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Typhlosion - 1st Edition Holo?: $458 as of 2026-08-09, our model-derived fair value for a PSA 8 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 8 Typhlosion - 1st Edition Holo?: 709 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 2.8% over the past 30 days.

PSA 7 commentary

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Typhlosion - 1st Edition Holo?

$394 as of 2026-08-09, our model-derived fair value for a PSA 7 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 7 Typhlosion - 1st Edition Holo?

380 copies have been graded at PSA 7, the graded population behind this atom.

How has the PSA 7 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 6.6% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Typhlosion - 1st Edition Holo?: $394 as of 2026-08-09, our model-derived fair value for a PSA 7 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 7 Typhlosion - 1st Edition Holo?: 380 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 6.6% over the past 30 days.

PSA 6 commentary

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Typhlosion - 1st Edition Holo?

$360 as of 2026-08-09, our model-derived fair value for a PSA 6 Typhlosion - 1st Edition Holo based on recent graded sales.

How rare is a PSA 6 Typhlosion - 1st Edition Holo?

260 copies have been graded at PSA 6, the graded population behind this atom.

How has the PSA 6 Typhlosion - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 7.1% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Typhlosion - 1st Edition Holo?: $360 as of 2026-08-09, our model-derived fair value for a PSA 6 Typhlosion - 1st Edition Holo based on recent graded sales.
How rare is a PSA 6 Typhlosion - 1st Edition Holo?: 260 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Typhlosion - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 7.1% over the past 30 days.

Other printings of Typhlosion and indices that include this card in their constituent basket.

Other printings of Typhlosion

Typhlosion - Unlimited$1,821

Indices containing this card

Parent set

Neo Genesis

Set total cap

$66.12M

Typhlosion #18, 1st Edition, Neo Genesis

Typhlosion #18, 1st Edition, Neo Genesis

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Typhlosion's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at May 17, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Neo GenesisParent set

Analysis

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Other printings of Typhlosion

Indices containing this card

Parent set

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Typhlosion's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at May 17, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Neo GenesisParent set

Analysis

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Other printings of Typhlosion

Indices containing this card

Parent set

Active listings on eBay

Population & rarity

Relative valuation vs. index

Active listings on eBay

Population & rarity

Relative valuation vs. index