Most legitimate companies will send you a sales recipt or invoice. The reason why ebay is demanding this is because of the scammers ripping off ebayers on large dollar items such as the ps3. I myself woulndt even bother with the units as they are basically a 10 pound expensive pile of metal. So far out of the 400,000 sold in the us 23% have already broken. Thats not a good number at all.