What is the catch with these 770s on ebay?

[Crisis]

I've been looking for a 770, and I see a bunch hitting ebay for cheap prices ($80 etc).

The sellers usually have good feedback, anyone know what the catch is?

Thanks!

[henry]

http://www.internettablettalk.com/forums/showthread.php?t=244&highlight=ebay

[phatman81]

i could not wait for it to get shipped, so i went to compusa to get one. now i have gotten the e-mail stating that my order from them has been shipped. if anyone is interested, i will have one for sale by the begining of newxt week.

[Crisis]

Thanks, I read that post, and as suspected, if a deal sounds too good to be true, it probably is ;-)