Has anyone used the website called www.discountanimeusa.com to buy anime...

It's not a legit site in the sense that they're selling bootlegs. I saw on the front page they're selling the .hack//The Movie DVD. .hack//The Movie has only been licensed outside of Japan for Germany.

So them selling a DVD with English subtitles is Red Alert on the fact that the original Japanese DVDs did not have English subtitles.

These are two things:
1. Single originals copy and subbed by ESL people in China/Malaysia so they're going to be in broken English. In which they burn it onto thousands DVDs which cost them $0.50
2. Stolen fansubs. In which point, why not just watch the fansub since they're free?