RUN!!

No, I haven't had experience with them.  

Yes, I'm certain they're Indian and how are you going to collect from them if they stiff you?

Yes, I'm certain the only work you'd get is work no one else will touch and if you try to raise your base rate to compensate, they'll cancel the order.

Yes, I'm FAIRLY certain they will use your fee sheet to undercut you.

Don't do it.  It's not worth it even with the work slow down.