Sentomaru.

What moves the price of this card

The Sentomaru on this page is the Normal printing from Legacy of the Master Release Event Cards, and it trades at $0.35 in near mint condition. The same name is on 8 other printings: One Piece Promotion Cards ST03-007 at $10.88, One Piece Promotion Cards ST03-007 at $4.93, Adventure on Kami's Island Release Event Cards EB04-053 at $2.97, One Piece Promotion Cards ST03-007 at $2.63, Paramount War Pre-Release Cards OP02-104 at $1, Super Pre-Release Starter Deck 3: The Seven Warlords of the Sea ST03-007 at $0.71, Starter Deck EX: Gear 5 ST21-007 at $0.64, One Piece Promotion Cards ST03-007 at $0.21, 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.