Professor Cozmo's Discovery #90, Reverse Holo, EX Deoxys
- Card number: #90/107
- Rarity: Uncommon
A PSA 9 Professor Cozmo's Discovery #90 Reverse Holo from EX Deoxys has a TCGBerg fair value of $92 as of Nov 15, 2026. It rests on 10 recorded sales, the latest on Oct 30, 2026. PSA has graded 29 copies at PSA 9. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
10 sales · latest Oct 30, 2026
- Population · PSA 9
- 29
- Market cap
- $2.7K
- Volatility
- 35.6%
- YTD
- ↑ 59.6%
- Sales evidence
- Limited
TCGBerg fair value · PSA 9
$92
Based on 10 recorded sales. Latest sale: Oct 30, 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, $66 on Oct 30, 2026, sits 28.2% below the $92 fair value. The value rests on 10 recorded PSA 9 sales. Its confidence band runs from $80 to $104. A PSA 10 ($900) is worth 9.8 times a PSA 9 ($92). Over the past 30 days the PSA 9 value has fallen 66.1%. 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$23Ungraded · TCGBerg fair value
- Raw LP$5.59Ungraded · TCGBerg fair value
- Raw HP$2.44Ungraded · market price
- Raw MP$1.69Ungraded · market price
- Raw Damaged$0.65Ungraded · 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.
- $66Oct 30, 2026 · via eBaybelow fair value by 28.0%
- $135Oct 22, 2026 · via eBayabove fair value by 39.4%
- $30Oct 10, 2026 · via tcgplayerRawabove fair value by 213.0%
- $31Oct 8, 2026 · via tcgplayerRawabove fair value by 228.6%
- $7.35Sep 25, 2026 · via tcgplayerRawbelow fair value by 23.3%
5 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
Includes a sale 71.8% 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.
- $9001d 0.0%7d 0.0%30d 30.3%
- Pop
- 3
- Mcap
- $2.7K
- Evidence
- Sparse
- Last
- -
- $921d 0.0%7d 0.0%30d 66.1%
- Pop
- 29
- Mcap
- $2.7K
- Evidence
- Limited
- Last
- $66
- $301d 0.0%7d 0.0%30d 25.5%
- Pop
- 7
- Mcap
- $211
- Evidence
- Sparse
- Last
- $16
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| $900 | 3 | $2.7K | 0.0% | 0.0% | down 30.3% | up 24.0% | Sparse | - | ||
| $92 | 29 | $2.7K | 0.0% | 0.0% | down 66.1% | down 39.8% | Limited | $662w ago | ||
| $30 | 7 | $211 | 0.0% | 0.0% | down 25.5% | down 45.5% | Sparse | $164mo ago | ||
| $20 | 4 | $79 | 0.0% | 0.0% | down 33.7% | down 40.3% | Sparse | - | ||
| $9.55 | 1 | $10 | 0.0% | 0.0% | down 52.8% | down 57.8% | Sparse | - | ||
| Raw | $23 | - | - | - | down 1.0% | up 144.1% | - | Moderate | $301mo ago |
PSA population report
44 graded copies of Professor Cozmo's Discovery Reverse Holo across 5 grades. The selected grade is highlighted.
PSA 9 makes up 66% of graded copies: 29 of 44. It’s the most common grade for this card.
Analysis
Professor Cozmo's Discovery - Reverse Holo at PSA 10 carries a TCGBerg fair value of $900 as of 2026-11-14. We track a TCGBerg fair value across 5 grades from EX Deoxys, from PSA 6 up to PSA 10. A graded population of 3 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 30.3%.
