Not all gill curls come from deformity. Actually, most gill curls occurs because of very poor water quality. And cutting the gill that deep is a very risky thing of leading gill disease for the fish.
If I am going to pick something that small, I would buy as many as possible and hopefully one turned out great. But being at a LFS, it is a very tough thing to do.
How much did you pay for each of them? I'll tell you what kind of quality is the FH at that size later...