Cheers for that i see where you're coming from and agree with your point that im probably better buying all the bits and building one with a 3700 SD core, but then i found this(!):
but that is incredibly cheap for whats in it
Avoid this listing, for three main reasons:
1) The 3800 processor does not run at 3.8Ghz. It runs at 2.4Ghz.
2) "80Gb UDMA SATA" is a myth, and and if the eBayer can't get this and the above point right, one wonders what their technical service must be like. Especially as you'd have to ship the entire computer to them at £25 a time EACH WAY only to be told there's naff all wrong with it.
3) £35 postage? Buy all the bits yourself from one supplier and it won't even cost a tenner. Come on buddy, you weren't born yesterday.
Buy the bits yourself, put the computer together yourself, learn something new. You won't regret it