Koga's Koffing - Normal, Gym Challenge: Fair Value

tcgberg

Pichu HoloNEOPSA 9$4871.0%

Dark Charizard 1st EditionROKPSA 8$1,4430.1%

Feraligatr HoloNEOPSA 9$3300.7%

Lugia HoloNEOPSA 9$2,7011.1%

Sabrina's Gengar HoloGYMPSA 8$7441.0%

Charizard ex HoloMEWPSA 10$1,6471.0%

Erika's Clefable 1st EditionGYMPSA 10$3,2130.7%

Togetic HoloNEOPSA 7$440.0%

Heracross HoloNEOPSA 9$1130.0%

Steelix HoloNEOPSA 10$4320.0%

Charmeleon HoloMEWPSA 10$5250.0%

Wartortle HoloMEWPSA 10$4140.4%

Dark Weezing 1st EditionROKPSA 10$9510.0%

Meganium HoloNEOPSA 9$2230.0%

Machamp 1st Edition ShadowlessBASPSA 8$1213.3%

Alakazam ex HoloMEWPSA 10$3642.6%

Charizard UnlimitedBASPSA 9$3,3700.2%

Raichu UnlimitedBASPSA 9$3443.2%

Slowking HoloNEOPSA 7$966.3%

Dark Hypno 1st EditionROKPSA 9$2230.1%

Clefairy UnlimitedBASPSA 9$2382.6%

Nidoking UnlimitedBASPSA 7$541.3%

Venusaur UnlimitedBASPSA 7$2001.2%

Machoke HoloMEWPSA 9$380.2%

Snorlax HoloJUNPSA 8$2860.1%

Kingdra HoloNEOPSA 7$355.7%

Gengar HoloFOSPSA 6$1501.7%

Gyarados UnlimitedBASPSA 6$460.9%

Moltres UnlimitedFOSPSA 10$35511.0%

Ivysaur UnlimitedBASPSA 8$462.3%

Mewtwo UnlimitedBASPSA 8$1680.5%

Gengar HoloMEWPSA 10$2550.1%

Mew ex HoloMEWPSA 9$610.8%

Kangaskhan HoloJUNPSA 9$960.2%

Blastoise ex HoloMEWPSA 9$1655.5%

Dark Charizard HoloROKPSA 6$2740.5%

Aerodactyl HoloFOSPSA 9$1300.3%

Jolteon HoloJUNPSA 8$1187.0%

Gust of Wind UnlimitedBASPSA 9$380.2%

Slowpoke 1st EditionFOSPSA 9$473.1%

Electabuzz UnlimitedBASPSA 8$320.0%

Psyduck HoloMEWPSA 8$604.6%

Bulbasaur UnlimitedBASPSA 9$530.9%

Dratini Reverse HoloLGCPSA 6$18077.0%

Giovanni's Machamp 1st EditionGYCPSA 10$1,973233.4%

Dark Slowbro HoloROKPSA 10$992220.3%

Muk Reverse HoloLGCPSA 10$1,223219.2%

Dark Porygon2 1st EditionNDEPSA 10$5,124187.1%

Blissey 1st EditionNRVPSA 9$88788.9%

Koga's Ditto 1st EditionGYCPSA 9$35482.0%

Koga's Koffing - Normal, Gym Challenge: Fair Value | TCGBerg

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$36
1d 0.0%7d 0.0%30d 0.0%
Pop
21
Mcap
$756
Conf
19
Last
$36
PSA9$11
1d 0.0%7d 0.0%30d 0.0%
Pop
33
Mcap
$365
Conf
36
Last
$7
PSA8$9
1d 0.0%7d 0.0%30d 0.0%
Pop
10
Mcap
$88
Conf
39
Last
$9


PSA10	$36	21	$756	0.0%	0.0%	0.0%	0.0%	—	19	$361y ago
PSA9	$11	33	$365	0.0%	0.0%	0.0%	0.3%	—	36	$79mo ago
PSA8	$9	10	$88	0.0%	0.0%	0.0%	0.0%	—	39	$911mo ago
PSA7	$16	3	$47	0.0%	0.0%	0.0%	0.0%	—	19	$162y ago
PSA6	$13	1	$13	0.0%	0.0%	0.0%	—	—	19	$132mo ago

Recent sales

Most recent transactions. From public auction comps and dealer reporting. Showing 2 of 2; 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
Oct 4, 2025	PSA9	$7	ebay	41.0%
Jul 25, 2025	PSA9	$15	ebay	0.5%

Oct 4, 2025PSA9
$741.0%
via ebay
Jul 25, 2025PSA9
$150.5%
via ebay

Analysis

Koga's Koffing - Normal at PSA 10 carries a TCGBerg fair value of $36 as of 2026-06-21. We track a TCGBerg fair value across 5 grades from Gym Challenge, from PSA 8 up to PSA 10. A graded population of 21 copies sits behind the PSA 10 grade. The PSA 10 valuation carries very low confidence (a confidence score of 19). Over the past 90 days, the PSA 9 TCGBerg fair value has fallen 0.3%.

Show more analysis

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Koga's Koffing - Normal is $36 as of 2026-06-21. 21 copies have been graded at this level. This valuation carries very low confidence (a confidence score of 19). The most recent recorded sale was $36 on 2025-03-23.

PSA 10 — frequently asked

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

$36 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?

21 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 $11 as of 2026-06-21. 33 copies have been graded at this level. This valuation carries low confidence (a confidence score of 36). Over the past 90 days the TCGBerg fair value has fallen 0.3%. The most recent recorded sale was $6 on 2025-10-04.

PSA 9 — frequently asked

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

$11 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?

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

How has the PSA 9 Koga's Koffing - Normal price moved recently?

Its TCGBerg fair value has fallen 0.3% over the past 90 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Koga's Koffing - Normal is $9 as of 2026-06-21. 10 copies have been graded at this level. This valuation carries low confidence (a confidence score of 39). The most recent recorded sale was $8 on 2025-08-09.

PSA 8 — frequently asked

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

$9 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?

10 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 $16 as of 2026-06-21. 3 copies have been graded at this level. This valuation carries very low confidence (a confidence score of 19). The most recent recorded sale was $16 on 2024-10-27.

PSA 7 — frequently asked

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

$16 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?

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

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Koga's Koffing - Normal is $12 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 $12 on 2026-05-01.

PSA 6 — frequently asked

What is the TCGBerg fair value of a PSA 6 Koga's Koffing - Normal?

$12 as of 2026-06-21, our model-derived fair value for a PSA 6 Koga's Koffing - Normal based on recent graded sales.

How rare is a PSA 6 Koga's Koffing - Normal?

1 copies have been graded at PSA 6, the graded population behind this atom.

Koga's Koffing #79, Normal, Gym Challenge

Price history

Price spectrum

TCGBerg fair value by grade

All grades matrix

Active listings on eBay

About Gym Challenge

Recent sales

Population & rarity

Relative valuation vs. index

Analysis

PSA 10 commentary

PSA 10 — frequently asked

PSA 9 commentary

PSA 9 — frequently asked

PSA 8 commentary

PSA 8 — frequently asked

PSA 7 commentary

PSA 7 — frequently asked

PSA 6 commentary

PSA 6 — frequently asked

Other printings of Koga's Koffing

Indices containing this card

Parent set

Koga's Koffing #79, Normal, Gym Challenge

Price spectrum

TCGBerg fair value by gradeSide-by-side comparison of fair value across every grade we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis.

All grades matrix

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

About Gym Challenge

Recent sales

Population & rarityHow 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. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

Analysis

PSA 10 commentary

PSA 10 — frequently asked

PSA 9 commentary

PSA 9 — frequently asked

PSA 8 commentary

PSA 8 — frequently asked

PSA 7 commentary

PSA 7 — frequently asked

PSA 6 commentary

PSA 6 — frequently asked

Related

Other printings of Koga's Koffing

Indices containing this card

Parent set

TCGBerg fair value by grade

Active listings on eBay

Population & rarity

Relative valuation vs. index