Bartholomew Kuma (OP15-029).

What moves the price of this card

The Bartholomew Kuma (OP15-029) on this page is the Normal printing from Adventure on Kami's Island Release Event Cards, and it trades at $0.99 in near mint condition. The same name is on 8 other printings: The Time of Battle EB04-054 at $78.16, One Piece Promotion Cards OP12-119 at $59.06, Legacy of the Master OP12-119 at $24.11, Legacy of the Master OP12-119 at $14.06, Awakening of the New Era: 1st Anniversary Tournament Cards OP05-011 at $9.71, One Piece Promotion Cards OP05-011 at $8.85, One Piece Promotion Cards OP09-108 at $7.38, Emperors in the New World: 2nd Anniversary Tournament Cards OP09-108 at $2.58, 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.