Haman Karn.

What moves the price of this card

The Haman Karn on this page is the Holofoil printing from Gundam Promotional Cards, and it trades at $15.82 in near mint condition. The same name is on 5 other printings: Gundam Promotional Cards GD02-091 at $289.78, Dual Impact GD02-091 at $24.84, Starter Deck 13: Silent Barrage ST13-011 at $24.33, Dual Impact GD02-091 at $0.95, Starter Deck 13: Silent Barrage ST13-011 at $0.15, so read the set, the number and the rarity together before comparing prices.

Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.