I'm thinking about selling my desktop computer in order to pay for a new laptop for myself (I'll probably get the Dell XPS 13 just like the one I got for my wife). The problem is, I'm not sure how to price it.

It's certainly not a new computer, but it's a good one, and has some nice components in it. Here's a brief summary:

Core i7 920 - 2.67GHz
MSI X58 Platinum motherboard
GeForce GTX 260 video card
250GB Crucial SSD
1TB WD hard drive
300GB WD Raptor hard drive
24GB DDR3 RAM
Lian Li full tower aluminum case (love this case, but it's huge)
Noctua [giant] CPU fan
520 Watt power supply
USB 3 PCIe card
Windows 7
Office 2010

I've included some photos. Any ideas where I should price this thing?