I buy huge amounts of stuff from them. That fan is always ( or for about a year ) been $1. I bought a bunch of those ( read: a gross ) and a bunch of socket a coolers ( read: 40 lb's worth ) and got it all shipped for $200. Shipping was only $7

it said, as much as ya want for $7 whipping, I took him up on that

( not sure if the $7 shipping is still going on )
I like the fans, as they are cheap, and quiet ( not as quiet as a ballbearing, but quiet ) and they move a decent amount of air. ( about 30 CFM ) I thow them in all the systems I build. Never had a single problem, but I have also never had to return anything, so not sure how that is. Check out the "ratings" that the site has a link to. You can tell that it has never been edited, a few customers curse the buisness out, but most are positive.
I gave a bunch of these fans to Rainguy, maybe he will stop by and say if he likes 'em or not.