I wouldn't recommend this site, it looks poorly made and the amount of ID they are asking for is a bit sketchy. Why not use a bigger, more reliable exchange like
www.kraken.com or
www.btc-e.com?Yes, some service are coming up with two plans like scamming people while they try converting/buying/selling and the other plan is stealing people's document and making cash out of them.
The name itself not giving me good impression as they were trying to imitate coinsbank's old name bit-x. I could not find any announcement topic for usd-x.com then why we must classify this services as legit ? A bitcoin based business must have support topic here in this bitcoin based forum. I guess there is no conventions like that, but why not we demand it for our security.