Koraidon #91, Temporal Forces Prerelease-Staff, SVP Black Star Promos
- Card number: #91
- ·Rarity: Promo
- ·Finish: Non-Holo
A PSA 10 Koraidon #91 Temporal Forces Prerelease-Staff from SVP Black Star Promos has a TCGBerg fair value of $447 as of Nov 15, 2026. TCGBerg has recorded 11 PSA 10 sales of this card, the latest on Oct 28, 2026. PSA has graded 74 copies at PSA 10.
TCGBerg Algorithm (estimated from recorded sales).
- Population · PSA 10
- 74
- Market cap
- $33.1K
- Volatility
- 34.0%
- YTD
- ↑ 176.2%
- Sales evidence
- Strong
TCGBerg fair value · PSA 10
$447
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 10. 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 10 sale, $675 on Oct 28, 2026, sits 51.0% above the $447 fair value. The value weighs 11 PSA 10 sales from the past year, not the latest one alone. The latest sale ran above the recent run: the last 5 PSA 10 sales averaged $503, within 12.6% of the value. Its confidence band runs from $368 to $526. A PSA 10 ($447) is worth 10.9 times a PSA 9 ($41). Over the past 30 days the PSA 10 value has risen 154.8%.
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 1, 2026 | PSA9 | eBay | $54 | above fair value by +30.7% |
| Oct 28, 2026 | PSA10 | eBay | $675 | above fair value by +49.9% |
| Oct 28, 2026 | PSA10 | eBay | $550 | above fair value by +22.1% |
| Oct 28, 2026 | PSA10 | eBay | $600 | above fair value by +33.2% |
| Oct 26, 2026 | PSA10 | eBay | $480 | above fair value by +6.6% |
- $54Nov 1, 2026 · via eBayPSA9↑above fair value by 30.7%
- $675Oct 28, 2026 · via eBayPSA10↑above fair value by 49.9%
- $550Oct 28, 2026 · via eBayPSA10↑above fair value by 22.1%
- $600Oct 28, 2026 · via eBayPSA10↑above fair value by 33.2%
- $480Oct 26, 2026 · via eBayPSA10↑above fair value by 6.6%
| Oct 16, 2026 | PSA10 | Fanatics Collect | $212 | above fair value by +1.6% |
| Oct 12, 2026 | PSA8 | eBay | $70 | above fair value by +201.7% |
| Sep 30, 2026 | PSA9 | eBay | $41 | above fair value by +27.2% |
- $212PSA10↑above fair value by 1.6%
- $70PSA8↑above fair value by 201.7%
- $41PSA9↑above fair value by 27.2%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 61.5% 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.
- PSA10$4471d ·0.0%7d ↓0.3%30d ↑154.8%
- Pop
- 74
- Mcap
- $33.1K
- Evidence
- Strong
- Last
- $675
- PSA9$411d ·0.0%7d ↑0.4%30d ↑25.0%
- Pop
- 128
- Mcap
- $5.3K
- Evidence
- Strong
- Last
- $54
- PSA8$291d ·0.0%7d ↓0.9%30d ↑26.7%
- Pop
- 24
- Mcap
- $698
- Evidence
- Moderate
- Last
- $70
| PSA10 | $447 | 74 | $33.1K | 0.0% | ↓down 0.3% | ↑up 154.8% | ↑up 128.7% | Strong | $6753w ago |
| PSA9 | $41 | 128 | $5.3K | 0.0% | ↑up 0.4% | ↑up 25.0% | ↑up 31.2% | Strong | $542w ago |
| PSA8 | $29 | 24 | $698 | 0.0% | ↓down 0.9% | ↑up 26.7% | ↑up 27.1% | Moderate | $701mo ago |
| PSA7 | $21 | 0 | - | 0.0% | ↓down 2.2% | ↑up 28.5% | ↑up 23.2% | Sparse | - |
| PSA6 | $15 | 0 | - | ↓down 0.1% | ↓down 3.6% | ↑up 30.2% | ↑up 19.4% | Sparse | - |
PSA population report
How Koraidon'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.226 graded copies of Koraidon Temporal Forces Prerelease-Staff across 3 grades. The selected grade is highlighted.
PSA 10 makes up 33% of graded copies: 74 of 226. PSA 9 is the most common grade (57%).
Analysis
Koraidon Temporal Forces Prerelease-Staff - Temporal Forces Prerelease-Staff at PSA 10 carries a TCGBerg fair value of $447 as of 2026-11-14. We track a TCGBerg fair value across 5 grades from SVP Black Star Promos, from PSA 6 up to PSA 10. A graded population of 74 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on strong sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has risen 154.8%.