Flip a coin. If heads, the Defending Pokémon is now Confused.
Latest market snapshots place Koffing in Expedition Base Set at roughly $0.83. Price action is stable over 7 days, moving only 0.0%.
Versus its 30-day baseline of $0.86, this card is now 3.3% lower. In the past 90 days, observed prices ranged from $0.81 to $0.91 (12% spread), a low-volatility profile.
Rarity classification for this copy is Common.
Pricing context for collectors: We observe a 0.0% shift this week, which points toward price consolidation rather than immediate volatility. With a 12% 90-day spread ($0.81-$0.91), this card currently tracks as low-volatility.
Versus the 30-day average ($0.86), the card is trading 3.3% lower. Top-grade copies show substantial separation from raw: PSA 10 is pricing +3149% above the current raw benchmark.
PSA 9 is currently around $66.10, while PSA 10 is $26.97.
Koffing appears in Expedition Base Set, released in 2002. Its card type is Pokémon.
The rarity label is Common. Printed HP is 50.
Energy typing is Grass. It carries a Basic subtype designation.
The printed attacks highlight "Ram" and "Confusion Gas". The card has a weakness to Psychic.
Collectors tracking Koffing often benchmark it against other Koffing cards. The current sample spans 6 comparable cards from 6 sets.
Observed alternatives run from $0.11 to $5.05 (4491% spread). The current card sits -14% versus the sampled alternative average of $0.96.
Notable alternatives include Koffing #50 (Evolutions) at $0.12, Koffing #27 (Fates Collide) at $0.16, Koffing #94 (Chilling Reign) at $0.14, and Koffing #SV076 (Shining Fates Shiny Vault) at $5.05.
Expedition Base Set was released in 2002. Expedition Base Set is grouped under the E-Card era.
The checklist contains 165 cards, placing it in a mid-size expansion range. As of 2026, the set is 24 years old and fits a legacy-era profile.
Koffing (#114) is one of the Common prints in this expansion.
