That looks like a scary deal, a good price and all, but I dunno if I could trust it.
However, he has pics of the amps open and mounting gear moved around, the buy it now auction is for a long period, usually scammers do an auction starting at a penny, and 1 day or so...
The feedback scares me as well....I'd try to pm the seller and have him take a picture of the amps and a piece of paper, and write his name in marker, preferably on notbook paper w/ lines, and then like, some kind of object that could not be easily added in/photoshopped in.
Also some scammers reply to messages automatically...and most go for a payment other than paypal.
I made a mistake once, the guy had good feedback, and seemed to work in a car stereo shop...well him or some scammer had a pic with a recent date stamp of it on the auction, no negative feedback yet, a few other auctions, looked legit...
Paid via paypal, and never got the shit. I got back 175 of 425, from back in november of last year, paypal says it's still trying to recover funds, but I dunno if I'll ever get the rest back.