All translation mistakes are mine – @joeylfy

Q. 買ってしまったけど、失敗したなーというものを教えてください。 
Q. Share with us an instance when you have purchased something but that purchase ended up as a failure.

★ユンホ (Yunho)

I bought a new pair of pants, but on that day itself, it was torn. What a waste~ – -”

★チャンミン (Changmin)

There was a game that I wanted to play, so I purchased a computer (t/n: to play that game). But the game was unpopular & I ended up not using it (t/n: the computer) very much

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Credits:

Official Bigeast Fanclub Website
Translated by @joeylfy of TVXQ! Express
Shared by TVXQ! Express