Slowpoke #66, Reverse Holo, HS Undaunted
- Card number: #66/90
- Rarity: Common
A PSA 8 Slowpoke #66 Reverse Holo from HS Undaunted has a TCGBerg fair value of $317 as of Nov 14, 2026. It rests on 8 recorded sales, the latest on Sep 8, 2026. PSA has graded 14 copies at PSA 8. Sales evidence is sparse, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
8 sales · latest Sep 8, 2026
- Population · PSA 8
- 14
- Market cap
- $4.4K
- Volatility
- 2.6%
- YTD
- ↑ 1029.6%
- Sales evidence
- Sparse
TCGBerg fair value · PSA 8
$317
Based on 8 recorded sales. Latest sale: Sep 8, 2026.
Price history
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.
What the evidence says
The last PSA 8 sale, $348 on Sep 8, 2026, sits 9.7% above the $317 fair value. The value rests on 8 recorded PSA 8 sales. Its confidence band runs from $238 to $396. A PSA 10 ($8,627) is worth 12.2 times a PSA 9 ($710). Over the past 30 days the PSA 8 value has risen 7.0%. With sparse 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$100Ungraded · market price
- Raw LP$90Ungraded · market price
- Raw MP$60Ungraded · market price
- Raw HP$45Ungraded · market price
- Raw Damaged$6.31Ungraded · market price
Behind the scenes
What goes into this price, and how much we know.
Recent sales
6 trackedEach sale against the grade's fair value on the day it sold.
- $348Sep 8, 2026 · via eBayabove fair value by 556.2%
- $315Aug 10, 2026 · via eBayabove fair value by 538.9%
- $275Apr 3, 2026 · via eBayabove fair value by 616.7%
- $500Apr 3, 2026 · via eBayabove fair value by 477.3%
- $200Jan 13, 2026 · via eBayabove fair value by 587.3%
1 more sale with Pro
Up to 20 recent sales, each with its venue and its gap to 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.
- $8,6271d 2.8%7d 24.4%30d 48.4%
- Pop
- 0
- Mcap
- -
- Evidence
- Sparse
- Last
- -
- $7101d 0.1%7d 0.7%30d 1.7%
- Pop
- 7
- Mcap
- $5.0K
- Evidence
- Sparse
- Last
- $500
- $3171d 0.0%7d 1.7%30d 7.0%
- Pop
- 14
- Mcap
- $4.4K
- Evidence
- Sparse
- Last
- $348
| $8,627 | 0 | - | up 2.8% | up 24.4% | up 48.4% | up 171.2% | Sparse | - | |
| $710 | 7 | $5.0K | up 0.1% | up 0.7% | up 1.7% | up 395.4% | Sparse | $5008mo ago | |
| $317 | 14 | $4.4K | 0.0% | up 1.7% | up 7.0% | up 543.4% | Sparse | $3482mo ago | |
| $83 | 4 | $331 | 0.0% | up 0.2% | down 15.4% | up 116.2% | Sparse | $4510mo ago | |
| $41 | 5 | $205 | 0.0% | 0.0% | down 21.6% | up 7.0% | Sparse | - | |
| $33 | 2 | - | 0.0% | 0.0% | down 2.7% | up 99.6% | Sparse | - | |
| Raw | $100 | - | - | - | - | - | - | - | - |
PSA population report
32 graded copies of Slowpoke Reverse Holo across 5 grades. The selected grade is highlighted.
PSA 8 makes up 44% of graded copies: 14 of 32. It’s the most common grade for this card.
Analysis
Slowpoke - Reverse Holo at PSA 10 carries a TCGBerg fair value of $8,627 as of 2026-11-14. We track a TCGBerg fair value across 6 grades from HS Undaunted, from PSA 5 up to PSA 10. The PSA 10 valuation rests on sparse sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has risen 48.4%.