also: ジャケットがい
noun, noun or participle which takes 'suru'
buying based on the cover
Colloquial term for purchasing a CD, book, game, etc. solely because the cover art or packaging is appealing, without knowing the content. Often used in entertainment and otaku contexts.
See also: ジャケット買い (ジャケットがい)
このアルバム、ジャケ買いしたけど、中身も最高だった。
I bought this album just for the cover, but the music turned out to be great too.
If you don't want to regret a cover-based purchase, you should read the reviews first.