New
Most of the parts came from Newegg, apart from the graphics card which I bought it at OCuK (
http://www.overclockers.co.uk), and the case which I bought at a local store.
Price list:
AMD Athlon 64 3500+ = $200
NF4 Ultra-Infinity = $95
G.Skill 2x512MB RAM = $70
200GB Maxtor SATA150 HDD = $90
XClio 450Watt (32A on 12V rail!!) = $45
Leadtek 7800GT = £200 (that was with £30 VAT too) = $350
XBlade Case with 3 fans = £15 = ~$25
Total: $875 = £495
Ok, so I was a little off, but hey, I'm not an expert mathematician
Although, If the 7800GT was bought at Newegg instead of the crazy price England sell it for, it would've been $825, which is £465.