What is this system worth?

Intel core2duo e6600 2.4GHz

Gigabyte GA-EP43-DS3L w/ DualDDR2 1200, 7.1 Audio, Gigabit Lan, PCI-E 2.0 x16

Patriot Extreme Performance DDR2 2GB (2 x 1GB) PC2-6400 Low Latency Dual Channel Kit

NEC3520a Dvd-RW

EVGA Geforce 8800 GTS 320MB

160GB Hard Drive

Silverstone 500w psu

Generic case

WinXP installed

Yep, about $400-$500 here. Probably can get more on Ebay.

Also, it really helps if you can provide good pictures of the case and the inside, so people can see that it is in good condition (if it is).

itadakimasu is right about the price. The only thing I could say is if everything is in great condition and you can prove it is running good (screen shots for example) I could see you getting a little more than $350. It being a complete package is worth a little extra, especially to someone who DOESN'T build their own systems. Again, Ebay will be the place for that kind of buyer.

The 8800 320 is getting a little long in the tooth, though it should handle most games (except Crysis) if you keep the resolution and/or the settings somewhat modest. Games like WoW would run great. 2 Gigs of ram is a little low, but since it is XP and not Vista, it shouldn't be too much of an issue in any game.