Cheaper By The Dozen [UMD] — PSPの価格と価値

Cheaper By The Dozen [UMD] (PSP) resale value

A loose copy of Cheaper By The Dozen [UMD] averages around $5. A complete-in-box (CIB) copy — game, box, and manual — runs about $7, and a factory-sealed copy commands $10.

What drives the price

Condition is everything: a clean, unscratched label, an intact box without crushing, and the original manual can swing the value 30–50%. Test that the game works before you buy or sell.