360 stainless steel roller rockers on ebay, too good to be true?!?!?

Hey guys, I've been shopping around for a decent set of roller rockers for my 360 I'm building and I came across these on Ebay. Was wondering if anyone has used them. They're feedback seems good and the store seems pretty legit, the price just seems too darn cheap for them to really be worth putting on my engine. Here's the ebay #200873660916. I was going to give them a call and ask if the rockers have bushings in them, but I figured I'd ask here first to see if anyone has used them. Thanks