TCGBerg fair value· PSA 8Estimated value from recent sales using TCGBerg's adaptive blend methodology: a weighted mix of time-decayed EWMA, trimmed median, and recent-window robust estimators.Learn more →
$503
Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.
Data quality good62/100
30D performance↑13.4%
30D↑ 13.4%
YTD↑ 62.0%
MCAP$78.0K
VOL6.3%
Last sale
$849
PSA 8 · May 21, 2026
68.8% above TCGBerg fair value
5-sale avg
$532
last 5 sales
Population · PSA 8
155
graded copies
Price spectrum
The bar shades green (below fair) to red (above), saturating at ±25%: the statistical band where most sales and listings cluster.
No price-spectrum data for this grade yet.
Price historyWeekly fair value over time, plus a confidence band around it: how precisely we can pin the value, which tightens as more sales confirm it. Dots mark individual sales, snapped to their week: red when above fair value (a premium), green when below (a deal), hollow when flagged as an outlier. Switch the active grade with the selector above.
Showing weekly fair value for PSA 8. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales. Confidence band: how precisely we can pin the fair value. It widens when sales scatter and narrows as more sales back the value up. The dots show the actual sale prices.
tcgberg.com
TCGBerg fair value · PSA 8Sale below fairSale above fairOutlier
Jun 22, 202552 weekly points · 16 salesJun 12, 2026
TCGBerg fair value by gradeSide-by-side comparison of fair value across every grade we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis.
Implied fair value at each grade, on a log scale that spans the full range from raw at $214 up to gem-mint at $17.7K.
tcgberg.com
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.
Listings
PSA10
$17,700
6
$106.2K
·0.0%
·0.0%
·0.0%
·0.0%
—
32
$17,7001y ago
PSA9
$918
118
$108.3K
·0.0%
·0.0%
↑3.4%
↓6.7%
—
53
$1,0001mo ago
PSA8
$503
155
$78.0K
↓0.7%
↓0.7%
↑13.4%
↑33.1%
—
62
$8493w ago
PSA7
$324
113
$36.6K
·0.0%
·0.0%
↑3.6%
↑67.4%
—
55
$4303w ago
PSA6
$214
98
$21.0K
·0.0%
↓4.4%
↓5.3%
↑36.0%
—
72
$2051w ago
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.
No active listings tracked for this printing yet.
About Base Set
This printing in the context of its parent set: total set cap and this printing's share of it.
Most recent transactions from public auction comps and dealer reporting. Showing 10 of 16; 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
May 21, 2026
PSA8
$849
fanatics_collect
↑68.8%
May 11, 2026
PSA8
$500
ebay
↓0.6%
May 2, 2026
PSA8
$450
ebay
↓10.6%
May 2, 2026
PSA8
$430
ebay
↓14.5%
Apr 27, 2026
PSA8
$430
ebay
↓14.5%
Feb 23, 2026
PSA8
$356
ebay
↓29.2%
Feb 7, 2026
PSA8
$400
ebay
↓20.5%
Jan 20, 2026
PSA8
$408
ebay
↓19.0%
Jan 8, 2026
PSA8
$500
ebay
↓0.6%
Jan 4, 2026
PSA8
$450
ebay
↓10.6%
May 21, 2026PSA8
$849↑68.8%
via fanatics_collect
May 11, 2026PSA8
$500↓0.6%
via ebay
May 2, 2026PSA8
$450↓10.6%
via ebay
May 2, 2026PSA8
$430↓14.5%
via ebay
Apr 27, 2026PSA8
$430↓14.5%
via ebay
Feb 23, 2026PSA8
$356↓29.2%
via ebay
Feb 7, 2026PSA8
$400↓20.5%
via ebay
Jan 20, 2026PSA8
$408↓19.0%
via ebay
Jan 8, 2026PSA8
$500↓0.6%
via ebay
Jan 4, 2026PSA8
$450↓10.6%
via ebay
Population & rarityHow Blastoise'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.
490 graded copies of Blastoise "Stage" Error across 5 grades. The selected grade is highlighted.
PSA 10
6 · 1.2%
PSA 9
118 · 24%
PSA 8
155 · 32%
PSA 7
113 · 23%
PSA 6
98 · 20%
PSA 8 makes up 32% of graded copies: 155 of 490. It’s the most common grade for this card.
Relative valuation vs. indexBoth series are indexed to 100 at May 10, 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.
How PSA 8 has moved relative to Base Set · Composite since May 10, 2026. Both indexed to 100 at the index’s inception. Card outperformed by 29.4 pp.
tcgberg.com
Analysis
Blastoise-Holo "Stage" Error - "Stage" Error at PSA 10 carries a TCGBerg fair value of $17,700 as of 2026-06-11. We track a TCGBerg fair value across 5 grades from Base Set, from PSA 6 up to PSA 10. A graded population of 6 copies sits behind the PSA 10 grade. The PSA 10 valuation carries low confidence (a confidence score of 32). Over the past 30 days, the PSA 8 TCGBerg fair value has risen 13.4%.
Show more analysis
PSA 10 commentary
The TCGBerg fair value of a PSA 10 Blastoise-Holo "Stage" Error - "Stage" Error is $17,700 as of 2026-06-11. 6 copies have been graded at this level. This valuation carries low confidence (a confidence score of 32). The most recent recorded sale was $17,700 on 2025-04-25.
PSA 10 — frequently asked
What is the TCGBerg fair value of a PSA 10 Blastoise-Holo "Stage" Error - "Stage" Error?
$17,700 as of 2026-06-11, our model-derived fair value for a PSA 10 Blastoise-Holo "Stage" Error - "Stage" Error based on recent graded sales.
How rare is a PSA 10 Blastoise-Holo "Stage" Error - "Stage" Error?
6 copies have been graded at PSA 10, the graded population behind this atom.
PSA 9 commentary
The TCGBerg fair value of a PSA 9 Blastoise-Holo "Stage" Error - "Stage" Error is $918 as of 2026-06-11. 118 copies have been graded at this level. This valuation carries medium confidence (a confidence score of 53). Over the past 30 days the TCGBerg fair value has risen 3.4%. The most recent recorded sale was $1,000 on 2026-05-13.
PSA 9 — frequently asked
What is the TCGBerg fair value of a PSA 9 Blastoise-Holo "Stage" Error - "Stage" Error?
$918 as of 2026-06-11, our model-derived fair value for a PSA 9 Blastoise-Holo "Stage" Error - "Stage" Error based on recent graded sales.
How rare is a PSA 9 Blastoise-Holo "Stage" Error - "Stage" Error?
118 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Blastoise-Holo "Stage" Error - "Stage" Error price moved recently?
Its TCGBerg fair value has risen 3.4% over the past 30 days.
PSA 8 commentary
The TCGBerg fair value of a PSA 8 Blastoise-Holo "Stage" Error - "Stage" Error is $503 as of 2026-06-11. 155 copies have been graded at this level. This valuation carries high confidence (a confidence score of 62). Over the past 30 days the TCGBerg fair value has risen 13.4%. The most recent recorded sale was $849 on 2026-05-21.
PSA 8 — frequently asked
What is the TCGBerg fair value of a PSA 8 Blastoise-Holo "Stage" Error - "Stage" Error?
$503 as of 2026-06-11, our model-derived fair value for a PSA 8 Blastoise-Holo "Stage" Error - "Stage" Error based on recent graded sales.
How rare is a PSA 8 Blastoise-Holo "Stage" Error - "Stage" Error?
155 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Blastoise-Holo "Stage" Error - "Stage" Error price moved recently?
Its TCGBerg fair value has risen 13.4% over the past 30 days.
PSA 7 commentary
The TCGBerg fair value of a PSA 7 Blastoise-Holo "Stage" Error - "Stage" Error is $324 as of 2026-06-11. 113 copies have been graded at this level. This valuation carries medium confidence (a confidence score of 55). Over the past 30 days the TCGBerg fair value has risen 3.6%. The most recent recorded sale was $430 on 2026-05-25.
PSA 7 — frequently asked
What is the TCGBerg fair value of a PSA 7 Blastoise-Holo "Stage" Error - "Stage" Error?
$324 as of 2026-06-11, our model-derived fair value for a PSA 7 Blastoise-Holo "Stage" Error - "Stage" Error based on recent graded sales.
How rare is a PSA 7 Blastoise-Holo "Stage" Error - "Stage" Error?
113 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Blastoise-Holo "Stage" Error - "Stage" Error price moved recently?
Its TCGBerg fair value has risen 3.6% over the past 30 days.
PSA 6 commentary
The TCGBerg fair value of a PSA 6 Blastoise-Holo "Stage" Error - "Stage" Error is $214 as of 2026-06-11. 98 copies have been graded at this level. This valuation carries high confidence (a confidence score of 72). Over the past 30 days the TCGBerg fair value has fallen 5.3%. The most recent recorded sale was $204 on 2026-06-04.
PSA 6 — frequently asked
What is the TCGBerg fair value of a PSA 6 Blastoise-Holo "Stage" Error - "Stage" Error?
$214 as of 2026-06-11, our model-derived fair value for a PSA 6 Blastoise-Holo "Stage" Error - "Stage" Error based on recent graded sales.
How rare is a PSA 6 Blastoise-Holo "Stage" Error - "Stage" Error?
98 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Blastoise-Holo "Stage" Error - "Stage" Error price moved recently?
Its TCGBerg fair value has fallen 5.3% over the past 30 days.
Related
Other printings of Blastoise and indices that include this card in their constituent basket.
