Wartortle #42, Evolution Box Error, Base Set
- Card number: #42/102
- ·Rarity: Uncommon
- ·Finish: Non-Holo
A PSA 9 Wartortle #42 Evolution Box Error from Base Set has a TCGBerg fair value of $599 as of Nov 14, 2026. It rests on 30 recorded sales, the latest on Nov 4, 2026. PSA has graded 106 copies at PSA 9. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
30 sales · latest Nov 4, 2026
- Population · PSA 9
- 106
- Market cap
- $63.5K
- Volatility
- 5.3%
- YTD
- ↓ 27.9%
- Sales evidence
- Limited
TCGBerg fair value · PSA 9
$599
Based on 30 recorded sales. Latest sale: Nov 4, 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 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. 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 9 sale, $584 on Nov 4, 2026, is in line with the $599 fair value (2.5% below). The value rests on 30 recorded PSA 9 sales. Its confidence band runs from $548 to $650. A PSA 10 ($4,572) is worth 7.6 times a PSA 9 ($599). Over the past 30 days the PSA 9 value has fallen 13.1%. 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.
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 6, 2026 | PSA4 | eBay | $141 | below fair value by -37.9% |
| Nov 4, 2026 | PSA9 | eBay | $584 | below fair value by -5.9% |
| Nov 2, 2026 | PSA7 | eBay | $263 | below fair value by -5.7% |
| Oct 22, 2026 | PSA9 | eBay | $460 | below fair value by -26.3% |
| Oct 19, 2026 | PSA6 | eBay | $307 | above fair value by +29.5% |
- $141Nov 6, 2026 · via eBayPSA4↓below fair value by 37.9%
- $584Nov 4, 2026 · via eBayPSA9↓below fair value by 5.9%
- $263Nov 2, 2026 · via eBayPSA7↓below fair value by 5.7%
- $460Oct 22, 2026 · via eBayPSA9↓below fair value by 26.3%
- $307Oct 19, 2026 · via eBayPSA6↑above fair value by 29.5%
| Oct 6, 2026 | PSA8 | eBay | $400 | above fair value by +0.8% |
| Sep 30, 2026 | PSA3 | eBay | $150 | above fair value by +8.1% |
| Sep 29, 2026 | PSA9 | eBay | $800 | above fair value by +16.0% |
- $400PSA8↑above fair value by 0.8%
- $150PSA3↑above fair value by 8.1%
- $800PSA9↑above fair value by 16.0%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 31.0% 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.
- PSA10$4,5721d ·0.0%7d ·0.0%30d ↓24.6%
- Pop
- 18
- Mcap
- $82.3K
- Evidence
- Sparse
- Last
- $3,000
- PSA9$5991d ·0.0%7d ↓3.6%30d ↓13.1%
- Pop
- 106
- Mcap
- $63.5K
- Evidence
- Limited
- Last
- $584
- PSA8$4071d ↑0.1%7d ↓1.3%30d ↑1.8%
- Pop
- 135
- Mcap
- $55.0K
- Evidence
- Moderate
- Last
- $400
| PSA10 | $4,572 | 18 | $82.3K | 0.0% | 0.0% | ↓down 24.6% | ↑up 23.1% | Sparse | $3,0008mo ago |
| PSA9 | $599 | 106 | $63.5K | 0.0% | ↓down 3.6% | ↓down 13.1% | ↓down 10.6% | Limited | $5841w ago |
| PSA8 | $407 | 135 | $55.0K | ↑up 0.1% | ↓down 1.3% | ↑up 1.8% | ↓down 1.7% | Moderate | $4001mo ago |
| PSA7 | $279 | 80 | $22.3K | ↑up 0.1% | ↑up 0.1% | ↑up 8.8% | ↑up 28.7% | Strong | $2632w ago |
| PSA6 | $233 | 54 | $12.6K | ↑up 0.1% | ↑up 0.1% | ↑up 10.9% | ↑up 36.8% | Moderate | $3074w ago |
| PSA5 | $230 | 28 | - | 0.0% | ↑up 0.1% | ↑up 9.4% | ↑up 37.9% | Limited | $1809mo ago |
| PSA4 | $147 | 23 | - | ↓down 0.2% | ↓down 35.3% | ↓down 29.2% | ↓down 10.8% | Limited | $1411w ago |
| PSA3 | $146 | 13 | - | ↓down 0.2% | ↓down 3.5% | ↑up 2.3% | ↑up 6.1% | Limited | $1502mo ago |
| PSA2 | $138 | 6 | - | ↓down 0.4% | ↑up 3.6% | ↑up 4.4% | ↑up 1.2% | Sparse | $852y ago |
| PSA1 | $136 | 9 | - | ↓down 0.4% | ↑up 3.6% | ↑up 4.4% | ↑up 1.2% | Sparse | $1635mo ago |
PSA population report
How Wartortle'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.472 graded copies of Wartortle Evolution Box Error across 10 grades. The selected grade is highlighted.
PSA 9 makes up 22% of graded copies: 106 of 472. PSA 8 is the most common grade (29%).
Analysis
Wartortle Evolution Box Error - Evolution Box Error at PSA 10 carries a TCGBerg fair value of $4,572 as of 2026-11-13. We track a TCGBerg fair value across 10 grades from Base Set, from PSA 1 up to PSA 10. A graded population of 18 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 24.6%.