Blastoise #31, Reverse Holo, Black & White - Boundaries Crossed
- BC

- ·Card number: #31/149
- ·Rarity: Rare
A PSA 8 Blastoise #31 Reverse Holo from Black & White - Boundaries Crossed has a TCGBerg fair value of $159 as of Nov 15, 2026. It rests on 10 recorded sales, the latest on Aug 21, 2026. PSA has graded 18 copies at PSA 8. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
10 sales · latest Aug 21, 2026
- Population · PSA 8
- 18
- Market cap
- $2.9K
- Volatility
- 1.7%
- YTD
- ↑ 351.9%
- Sales evidence
- Limited
TCGBerg fair value · PSA 8
$159
Based on 10 recorded sales. Latest sale: Aug 21, 2026.
Price history
Weekly 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.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.
What the evidence says
The last PSA 8 sale, $142 on Aug 21, 2026, sits 11.0% below the $159 fair value. The value rests on 10 recorded PSA 8 sales. Its confidence band runs from $119 to $199. A PSA 10 ($7,059) is worth 19.9 times a PSA 9 ($354). Over the past 30 days the PSA 8 value has risen 0.8%. With limited sales evidence, read the gap and the band as rough guides.
TCGBerg fair value by grade
Side-by-side comparison of value across every grade and ungraded condition we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis. Solid bars are the TCGBerg fair value, modelled from recorded sales. Hatched bars are the latest market price instead, shown for ungraded conditions that trade too rarely for us to price one honestly.Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
- Raw NM$39Ungraded · TCGBerg fair value
- Raw LP$20Ungraded · TCGBerg fair value
- Raw MP$13Ungraded · TCGBerg fair value
- Raw HP$9.44Ungraded · market price
- Raw Damaged$9.11Ungraded · market price
Behind the scenes
How the published fair value for this grade was produced: the sales it rests on, how they were put together, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.What goes into this price, and how much we know.
Recent sales
20 trackedEach sale against the grade's fair value on the day it sold.
| Date | Grade | Venue | Price | vs fair value |
|---|---|---|---|---|
| Nov 4, 2026 | PSA5 | eBay | $70 | above fair value by +56.0% |
| Oct 28, 2026 | Raw | tcgplayer | $46 | above fair value by +18.4% |
| Oct 28, 2026 | Raw | tcgplayer | $40 | above fair value by +1.9% |
| Oct 26, 2026 | PSA10 | Fanatics Collect | $7,800 | above fair value by +10.5% |
| Oct 18, 2026 | Raw | tcgplayer | $38 | below fair value by -3.6% |
- $70Nov 4, 2026 · via eBayPSA5↑above fair value by 56.0%
- $46Oct 28, 2026 · via tcgplayerRaw↑above fair value by 18.4%
- $40Oct 28, 2026 · via tcgplayerRaw↑above fair value by 1.9%
- $7,800Oct 26, 2026 · via Fanatics CollectPSA10↑above fair value by 10.5%
- $38Oct 18, 2026 · via tcgplayerRaw↓below fair value by 3.6%
| Oct 15, 2026 | Raw | tcgplayer | $39 | at fair value by 0.0% |
| Oct 7, 2026 | PSA7 | eBay | $119 | above fair value by +21.6% |
| Oct 4, 2026 | CGC Gem Mint 10 | eBay | $1,000 | at fair value by 0.0% |
- $39Raw·at fair value by 0.0%
- $119PSA7↑above fair value by 21.6%
- $1,000CGC Gem Mint 10·at fair value by 0.0%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 21.0% 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.
- CGC Gem Mint 10$1,0001d -7d -30d -
- Pop
- -
- Mcap
- -
- Evidence
- Sparse
- Last
- $1,000
- PSA10$7,0591d ·0.0%7d ·0.0%30d ↑113.0%
- Pop
- 3
- Mcap
- $21.2K
- Evidence
- Sparse
- Last
- $7,800
- PSA9$3541d ↑1.5%7d ↑2.9%30d ↑30.2%
- Pop
- 29
- Mcap
- $10.3K
- Evidence
- Sparse
- Last
- $130
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGC Gem Mint 10 | $1,000 | - | - | - | - | - | - | Sparse | $1,0001mo ago | |
| PSA10 | $7,059 | 3 | $21.2K | 0.0% | 0.0% | ↑up 113.0% | ↑up 176.7% | Sparse | $7,8003w ago | |
| PSA9 | $354 | 29 | $10.3K | ↑up 1.5% | ↑up 2.9% | ↑up 30.2% | ↑up 66.6% | Sparse | $1306mo ago | |
| PSA8 | $159 | 18 | $2.9K | 0.0% | 0.0% | ↑up 0.8% | ↑up 79.1% | Limited | $1423mo ago | |
| PSA7 | $102 | 7 | $716 | 0.0% | 0.0% | ↑up 8.2% | ↑up 50.9% | Sparse | $1191mo ago | |
| PSA6 | $65 | 11 | $720 | 0.0% | ↑up 0.1% | ↓down 3.1% | ↑up 77.6% | Limited | $369mo ago | |
| PSA5 | $45 | 5 | - | 0.0% | 0.0% | ↓down 22.0% | ↑up 21.7% | Sparse | $702w ago | |
| Raw | $39 | - | - | - | 0.0% | - | - | Strong | $463w ago |
Graded population report
How 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. These are recorded graded copies, not the total print run. A smaller population alone does not establish a price premium.75 graded copies of Blastoise Reverse Holo across 7 grades. The selected grade is highlighted.
PSA 8 makes up 24% of graded copies: 18 of 75. PSA 9 is the most common grade (39%).
Analysis
Blastoise - Reverse Holo at PSA 10 carries a TCGBerg fair value of $7,059 as of 2026-11-14. We track a TCGBerg fair value across 7 grades from Black & White - Boundaries Crossed, from PSA 5 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 risen 113.0%.