Full Armor Unicorn Gundam (Destroy Mode) (U+).

What moves the price of this card

The Full Armor Unicorn Gundam (Destroy Mode) (U+) on this page is the Holofoil printing from Steel Requiem, and it trades at $12.17 in near mint condition. The same name is on 8 other printings: Starter Deck 14: Heavy Dominion ST14-006 at $41.79, Starter Deck 14: Heavy Dominion ST14-007 at $18.79, Gundam Promotional Cards GD03-010 at $9.50, Starter Deck 14: Heavy Dominion ST14-006 at $0.66, Gundam Promotional Cards GD03-010 at $0.44, Starter Deck 14: Heavy Dominion ST14-007 at $0.17, Steel Requiem GD03-016 at $0.11, Steel Requiem GD03-010 at $0.10, 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.