I know this guy personally and will vouch for him, he is NOT a scammer and if you don't like the way his auction is set up buzz off! and don't bid there are a million other auctions on here!!!
If you plug it into your Xbox you can see how many gigs it is exactly. It will say space reamaining and if it is empty then just round that number up and it will be the right number. It's strange that it doesn't say it on the side. Mine says 120 on the side right before HDD.
someone said that the 20gb doesnt have the number 20 on the harddrive, but i have a 20gb that came with my pro, and it clearly says 20gb hdd on the silver part on top. and the actuall usable space on it, is a little over 13gb.
I checked mine and it has a little over 13 gigs of free space I wounder if it matters if u get the pro or arcade version that it will tell u if it's a 20 gig or not
usually when it doesn't say its a twenty gig but fourteen gigs? that not right it should not take up six gigs for backwards compatibility and other fancy xbox 360 code. but if a real pic was up we'd know if it were official or not because of the Microsoft seal. shown in the stock photo. but anyways I know that it shouldn't take up that much room because i have sixty gig and the only space taken up for backwards compatibly is half a gig