Koga's Koffing #48, 1st Edition, Gym Challenge
- GC

- ·Card number: #48/132
- ·Rarity: Uncommon
- ·Finish: Non-Holo
A PSA 9 Koga's Koffing #48 1st Edition from Gym Challenge has a TCGBerg fair value of $42 as of Nov 15, 2026. TCGBerg has recorded 14 PSA 9 sales of this card, the latest on Oct 28, 2026. PSA has graded 156 copies at PSA 9.
TCGBerg Algorithm (estimated from recorded sales).
- Population · PSA 9
- 156
- Market cap
- $6.6K
- Volatility
- 8.2%
- YTD
- ↑ 76.6%
- Sales evidence
- Moderate
TCGBerg fair value · PSA 9
$42
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, $40 on Oct 28, 2026, sits 5.6% below the $42 fair value. The value weighs 14 PSA 9 sales from the past year, not the latest one alone. Its confidence band runs from $39 to $46. A PSA 10 ($291) is worth 6.9 times a PSA 9 ($42). Over the past 30 days the PSA 9 value has risen 22.1%.
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$7.63Ungraded · TCGBerg fair value
- Raw LP$3.08Ungraded · TCGBerg fair value
- Raw HP$3.00Ungraded · market price
- Raw MP$2.43Ungraded · TCGBerg fair value
- Raw Damaged$1.71Ungraded · 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 2, 2026 | CGC9.5 | Fanatics Collect | $16 | above fair value by +7.8% |
| Nov 2, 2026 | CGC Gem Mint 10 | Fanatics Collect | $42 | above fair value by +15.7% |
| Oct 29, 2026 | Raw | tcgplayer | $9.35 | above fair value by +20.6% |
| Oct 28, 2026 | PSA9 | eBay | $40 | below fair value by -5.2% |
| Oct 25, 2026 | Raw | tcgplayer | $7.74 | above fair value by +9.6% |
- $16Nov 2, 2026 · via Fanatics CollectCGC9.5↑above fair value by 7.8%
- $42Nov 2, 2026 · via Fanatics CollectCGC Gem Mint 10↑above fair value by 15.7%
- $9.35Oct 29, 2026 · via tcgplayerRaw↑above fair value by 20.6%
- $40Oct 28, 2026 · via eBayPSA9↓below fair value by 5.2%
- $7.74Oct 25, 2026 · via tcgplayerRaw↑above fair value by 9.6%
| Oct 23, 2026 | PSA9 | eBay | $66 | above fair value by +53.3% |
| Oct 19, 2026 | PSA9 | eBay | $31 | below fair value by -27.5% |
| Oct 16, 2026 | Raw | tcgplayer | $8.12 | above fair value by +15.3% |
- $66PSA9↑above fair value by 53.3%
- $31PSA9↓below fair value by 27.5%
- $8.12Raw↑above fair value by 15.3%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 27.5% 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.
- CGC6$141d -7d -30d -
- Pop
- 2
- Mcap
- -
- Evidence
- Sparse
- Last
- -
- CGC7$181d -7d -30d -
- Pop
- 7
- Mcap
- -
- Evidence
- Sparse
- Last
- -
- CGC Gem Mint 10$381d ↑5.9%7d ↑5.9%30d ↑5.9%
- Pop
- 28
- Mcap
- $1.1K
- Evidence
- Strong
- Last
- $42
| Listings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGC6 | $14 | 2 | - | - | - | - | - | Sparse | - | |
| CGC7 | $18 | 7 | - | - | - | - | - | Sparse | - | |
| CGC Gem Mint 10 | $38 | 28 | $1.1K | ↑up 5.9% | ↑up 5.9% | ↑up 5.9% | ↑up 5.9% | Strong | $422w ago | |
| CGC9.5 | $15 | 14 | $212 | ↑up 4.7% | ↑up 4.7% | ↑up 4.7% | ↑up 4.7% | Strong | $162w ago | |
| PSA10 | $291 | 67 | $19.5K | 0.0% | ↓down 0.2% | ↑up 16.0% | ↑up 47.1% | Sparse | $1583mo ago | |
| PSA9 | $42 | 156 | $6.6K | ↑up 0.3% | ↑up 0.7% | ↑up 22.1% | ↓down 11.2% | Moderate | $403w ago | |
| PSA8 | $29 | 44 | $1.3K | ↓down 0.1% | ↑up 0.4% | ↑up 10.8% | ↑up 23.8% | Moderate | $252mo ago | |
| PSA7 | $22 | 7 | $151 | 0.0% | 0.0% | ↓down 1.6% | ↑up 9.0% | Sparse | - | |
| PSA6 | $21 | 3 | $62 | 0.0% | 0.0% | ↓down 4.9% | ↑up 5.3% | Sparse | - | |
| PSA5 | $21 | 1 | - | 0.0% | 0.0% | ↓down 4.9% | ↑up 5.3% | Sparse | - | |
| Raw | $7.63 | - | - | - | ↓down 0.8% | ↑up 12.0% | - | Very strong | $9.352w ago |
Graded population report
How Koga's Koffing'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.459 graded copies of Koga's Koffing 1st Edition across 25 grades. The selected grade is highlighted.
PSA 9 makes up 34% of graded copies: 156 of 459. It’s the most common grade for this card.
Analysis
Koga's Koffing - 1st Edition Normal at PSA 10 carries a TCGBerg fair value of $291 as of 2026-11-14. We track a TCGBerg fair value across 10 grades from Gym Challenge, from CGC 6 up to PSA 10. A graded population of 67 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 16.0%.