Gym Challenge · Normal

Koga's Koffing #48, Normal, Gym Challenge

TKRGYMU48:EN-P10

Updated today

TCGBerg fair value· PSA 10

$63

Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.

Data quality weak21/100

30D performance0.0%

30D· 0.0%

YTD↑ 0.3%

MCAP$634

VOL0.0%

Last sale

$500

PSA 10 · Jan 3, 2026

688.5% above TCGBerg fair value

5-sale avg

$138

last 5 sales

Population · PSA 10

graded copies

Price history

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.

TCGBerg fair value · PSA 10Sale below fairSale above fairOutlier

Jun 29, 202552 weekly points · 3 salesJun 21, 2026

Price spectrum

No price-spectrum data for this grade yet.

TCGBerg fair value by grade

Implied fair value at each grade, on a log scale that spans the full range from raw (Near Mint) at $2 up to gem-mint at $63.

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$63
1d 0.0%7d 0.0%30d 0.0%
Pop
10
Mcap
$634
Conf
21
Last
$500
PSA9$20
1d 0.0%7d 0.0%30d 0.0%
Pop
8
Mcap
$160
Conf
19
Last
$20
PSA8$15
1d 0.0%7d 0.0%30d 0.0%
Pop
11
Mcap
$160
Conf
38
Last
$17


PSA10	$63	10	$634	0.0%	0.0%	0.0%	0.0%	—	21	$5006mo ago
PSA9	$20	8	$160	0.0%	0.0%	0.0%	0.0%	—	19	$202y ago
PSA8	$15	11	$160	0.0%	0.0%	0.0%	0.0%	—	38	$1710mo ago
PSA7	$10	1	$10	0.0%	0.0%	0.0%	0.0%	—	19	$101y ago
Raw	$2	—	—	—	—	—	—	—	—	—

Active listings on eBay

No active listings tracked for this printing yet.

About Gym Challenge

This printing in the context of its parent set: total set cap and this printing's share of it.

Browse all sets →

Set total cap

$65.07M

across all printings

This printing's share

0.0%

of total set cap

Implied printing cap

$964

share × set cap

Recent sales

Most recent transactions. From public auction comps and dealer reporting. Showing 3 of 3; delta vs fair value is the difference between the sale price and the grade's quoted fair value on that date.

Date	Grade	Price	Source	vs TCGBerg FV
Jan 3, 2026	PSA10	$500	ebay	691.1%
Sep 30, 2025	PSA10	$85	ebay	33.6%
Jun 24, 2025	PSA10	$45	ebay	5.4%

Jan 3, 2026PSA10
$500691.1%
via ebay
Sep 30, 2025PSA10
$8533.6%
via ebay
Jun 24, 2025PSA10
$455.4%
via ebay

Population & rarity

30 graded copies of Koga's Koffing Normal across 4 grades. The selected grade is highlighted.

PSA 10

10 · 33%

PSA 9

8 · 27%

PSA 8

11 · 37%

PSA 7

1 · 3.3%

PSA 10 makes up 33% of graded copies: 10 of 30. PSA 8 is the most common grade (37%).

Relative valuation vs. index

How PSA 10 has moved relative to Gym Challenge · Normal · Composite since May 10, 2026. Both indexed to 100 at the index’s inception. Card underperformed by 7.2 pp.

Analysis

Koga's Koffing - Normal at PSA 10 carries a TCGBerg fair value of $63 as of 2026-06-21. We track a TCGBerg fair value across 4 grades from Gym Challenge, from PSA 7 up to PSA 10. A graded population of 10 copies sits behind the PSA 10 grade. The PSA 10 valuation carries low confidence (a confidence score of 21).

Show more analysis

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Koga's Koffing - Normal is $63 as of 2026-06-21. 10 copies have been graded at this level. This valuation carries low confidence (a confidence score of 21).

PSA 10 — frequently asked

What is the TCGBerg fair value of a PSA 10 Koga's Koffing - Normal?

$63 as of 2026-06-21, our model-derived fair value for a PSA 10 Koga's Koffing - Normal based on recent graded sales.

How rare is a PSA 10 Koga's Koffing - Normal?

10 copies have been graded at PSA 10, the graded population behind this atom.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Koga's Koffing - Normal is $20 as of 2026-06-21. 8 copies have been graded at this level. This valuation carries very low confidence (a confidence score of 19). The most recent recorded sale was $20 on 2024-10-27.

PSA 9 — frequently asked

What is the TCGBerg fair value of a PSA 9 Koga's Koffing - Normal?

$20 as of 2026-06-21, our model-derived fair value for a PSA 9 Koga's Koffing - Normal based on recent graded sales.

How rare is a PSA 9 Koga's Koffing - Normal?

8 copies have been graded at PSA 9, the graded population behind this atom.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Koga's Koffing - Normal is $15 as of 2026-06-21. 11 copies have been graded at this level. This valuation carries low confidence (a confidence score of 38). The most recent recorded sale was $17 on 2025-08-31.

PSA 8 — frequently asked

What is the TCGBerg fair value of a PSA 8 Koga's Koffing - Normal?

$15 as of 2026-06-21, our model-derived fair value for a PSA 8 Koga's Koffing - Normal based on recent graded sales.

How rare is a PSA 8 Koga's Koffing - Normal?

11 copies have been graded at PSA 8, the graded population behind this atom.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Koga's Koffing - Normal is $10 as of 2026-06-21. 1 copies have been graded at this level. This valuation carries very low confidence (a confidence score of 19). The most recent recorded sale was $10 on 2025-03-23.

PSA 7 — frequently asked

What is the TCGBerg fair value of a PSA 7 Koga's Koffing - Normal?

$10 as of 2026-06-21, our model-derived fair value for a PSA 7 Koga's Koffing - Normal based on recent graded sales.

How rare is a PSA 7 Koga's Koffing - Normal?

1 copies have been graded at PSA 7, the graded population behind this atom.

Other printings of Koga's Koffing and indices that include this card in their constituent basket.

Other printings of Koga's Koffing

Koga's Koffing - 1st Edition Normal$153

Indices containing this card

Parent set

Gym Challenge