Pokémon · Single card
Koffing
Base · Base
Number
51/102
Rarity
Common
HitBinder Price
~£0.90
Firm · ungraded
PSA 10
~£272.39
graded · Estimate
Price by condition
NM
£0.90
LP
£0.47
MP
£0.35
HP
£0.33
DM
£0.33
NM is the HitBinder Price; the rest use real per-condition ratios from our price archive.
Price history
▲ 27.1%— — PSA 10 shown on its own scale (a slab often trades many times raw).
Grade analysis
2,742 graded by PSA · 23% gem rate
PSA 10 uplift
302.7×
Gem rate
23%
Net if it 10s
£246.5
Population and per-grade prices from our price archive · printing: first Edition Shadowless. “Net if it 10s” assumes a ~£25 grading cost and is not a guarantee — the gem rate is the odds it actually grades a 10.
PSA 10 by printing
Vintage printings grade very differently — check which one you hold.
| Printing | PSA 10 | Pop | Gem rate |
|---|---|---|---|
| Shadowless | ~£314.64 | 161 | 20.1% |
| 1st Ed. Shadowless | ~£272.39 | 631 | 23% |
| Unlimited | ~£97.92 | 392 | 28.2% |
The HitBinder Price is our trust-weighted estimate (archive blend), shown in your chosen display currency (switch it top-right); PSA 10 reflects recent graded sales. Indicative, not quotes — condition, grading and printing variance apply.
Live on eBay
Price trend
▼ 28.9% · 20 wksCard details
Foul Gas
10Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, it is now Confused.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
Illustrated by Mitsuhiro Arita
Base
Base · 102 cards · 1999-01-09
Card analytics
Market snapshotSupply & demand
No members selling or wanting this yet.
Share of set value
£0.90 of £1,586.91 across the whole set.
Value rank in set
Ahead of 34 priced cards in the set.
Price stats
20 weekly snapshotsLow
£0.72
Average
£0.95
High
£1.28
Members selling this
No member has this listed for sale right now. Add it to your wantlist and we'll alert you when someone lists it.