So, this reply kind of has nothing to do with your original question, but if you are looking for a good, cheap ebay seller that stays true to custom measurements then I suggest checking this seller out:
They have a TON of costumes for sale so I was thinking that maybe they carry the cosplay you are wanting to buy. Just thought I'd share. I love them because they really do stick to the measurements you send. I'd also like to mention that any negative feedback the store has is regarding their wigs. There is not a single negative review for their costumes. So i would avoid wigs from them. Good luck!
Cinncinnati Comic Con
Megaman/Bass Crossover (Megaman Battle Network)-0%
Asuka Plugsuit (Evangelion 3.33)- 100%
Black Widow (The Avengers)- 100%
Baby Doll (Sucker Punch)- 60%