How much would this sell for?

[wdlax11]

It about 3 years old this christmas, case only has 1 scratch in it and its very small, will come clean as a whistle no dust will be found inside the case. Plus I will restore it to it's original state so will act like new

The specs:
Processor:
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory:
4 GB RAM
Hard Drive:
400 GB
Video Card:
VisionTek Radeon X1550 Series
Sound Card:
Speakers (SigmaTel High Definition Audio CODEC)
Operating System:
Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.080917-1612)
Extras:
15-1 memory card reader

 

[obsidian86]

$300-$350 if you lucky

 

[ares1214]

400-600 if you are good and take it to the right places