I've used them a few times, they 'legit', don't get me wrong.. but thier useless.
A LOT of the items I've received have had wrong measurements, I mean, there are obvious spelling mistakes everywhere and items often don't have full descriptions.. this has often forced me to much trouble just to actually use what I've bought and resulted in many unnecessary DIY jobs.
Don't even bother emailing them! - I've tried to contact them concerning $5K group purchases.. asked for help, a little advice, shipping info/times... no reply.
I just bit the bullet one day and bought off them since their rates on some stuff is pretty good, bought a few times since here and there... meh, just make sure you look elsewhere for info on what your buying, them go back to them if its a good price.