Professor Elm's Training Method #148, Reverse Holo, Expedition Base Set
- Card number: #148/165
- Rarity: Uncommon
A PSA 9 Professor Elm's Training Method #148 Reverse Holo from Expedition Base Set has a TCGBerg fair value of $105 as of Nov 15, 2026. It rests on 12 recorded sales, the latest on Oct 23, 2026. PSA has graded 26 copies at PSA 9. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
12 sales · latest Oct 23, 2026
- Population · PSA 9
- 26
- Market cap
- $2.7K
- Volatility
- 12.6%
- YTD
- ↑ 204.7%
- Sales evidence
- Limited
TCGBerg fair value · PSA 9
$105
Based on 12 recorded sales. Latest sale: Oct 23, 2026.
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.
What the evidence says
The last PSA 9 sale, $89 on Oct 23, 2026, sits 15.4% below the $105 fair value. The value rests on 12 recorded PSA 9 sales. Its confidence band runs from $92 to $117. A PSA 10 ($659) is worth 6.3 times a PSA 9 ($105). Over the past 30 days the PSA 9 value has fallen 24.7%. With limited sales evidence, read the gap and the band as rough guides.
TCGBerg fair value by grade
Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
- Raw NM$38Ungraded · market price
- Raw LP$29Ungraded · market price
- Raw MP$27Ungraded · TCGBerg fair value
- Raw HP$14Ungraded · market price
- Raw Damaged$8.35Ungraded · market price
Behind the scenes
What goes into this price, and how much we know.
Recent sales
10 trackedEach sale against the grade's fair value on the day it sold.
- $49Nov 4, 2026 · via tcgplayerRawat fair value by 0.0%
- $89Oct 23, 2026 · via eBaybelow fair value by 32.5%
- $115Sep 28, 2026 · via eBayabove fair value by 17.1%
- $403Jul 21, 2026 · via eBaybelow fair value by 12.4%
- $106Jun 29, 2026 · via eBayabove fair value by 6.2%
5 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
Includes a sale 29.5% below fair value
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.
- $6591d 0.2%7d 0.1%30d 7.4%
- Pop
- 12
- Mcap
- $7.9K
- Evidence
- Sparse
- Last
- $403
- $1051d 0.6%7d 0.9%30d 24.7%
- Pop
- 26
- Mcap
- $2.7K
- Evidence
- Limited
- Last
- $89
- $661d 1.1%7d 1.0%30d 33.5%
- Pop
- 23
- Mcap
- $1.5K
- Evidence
- Limited
- Last
- $115
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| $659 | 12 | $7.9K | up 0.2% | up 0.1% | down 7.4% | up 32.3% | Sparse | $4034mo ago | ||
| $105 | 26 | $2.7K | up 0.6% | up 0.9% | down 24.7% | up 10.9% | Limited | $893w ago | ||
| $66 | 23 | $1.5K | down 1.1% | down 1.0% | down 33.5% | up 10.5% | Limited | $1152mo ago | ||
| $40 | 8 | $322 | down 0.2% | down 0.2% | down 31.9% | up 5.2% | Sparse | $207mo ago | ||
| $40 | 9 | $363 | down 0.2% | down 0.2% | down 31.9% | up 5.2% | Sparse | $501y ago | ||
| $40 | 1 | - | down 0.2% | down 0.2% | up 24.3% | up 54.7% | Sparse | - | ||
| Raw | $38 | - | - | 0.0% | 0.0% | down 18.1% | down 18.1% | - | $492w ago |
PSA population report
79 graded copies of Professor Elm's Training Method Reverse Holo across 6 grades. The selected grade is highlighted.
PSA 9 makes up 33% of graded copies: 26 of 79. It’s the most common grade for this card.
Analysis
Professor Elm's Training Method - Reverse Holo at PSA 10 carries a TCGBerg fair value of $659 as of 2026-11-14. We track a TCGBerg fair value across 6 grades from Expedition Base Set, from PSA 7 up to PSA 10. A graded population of 12 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on sparse sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has fallen 7.4%.
