How much should I sell my system for?

PeDDeR27

Honorable
Oct 30, 2013
5
0
10,510
Possibly selling my old system to a friend, but I have no idea what I should sell it for. Any help?

Case: Alienware Area-51 Full Tower ATX
Processor/CPU: Intel Core i7 920 2.67GHz
CPU Cooler: Xigmatek Dark Knight
Graphics Card/GPU: EVGA GTX 560 Ti SC 1GB w/ Backplate
Motherboard: ASUS P6T Deluxe V2
Power Supply/PSU: Corsair TX750W
RAM: Corsair XMS3 6GB 1600 Cas 9
Hard Drive: Western Digital Black 1TB SATA II
CD/DVD Drive: NEC DVD_RW
Operating System: Microsoft Windows 7 Ultimate 64-Bit
Keyboard: Creative Fatal1ty Gaming Keyboard (kind of funky, but usable and works perfectly)
Mouse: Razer Copperhead Gaming Mouse (kind of funky, but usable and works perfectly)
Mouse Pad: fUnc SUrface 1030 Original
Webcam: Logitech QuickCam Communicate STX
Monitor/Screen: NEC Multisync 17-Inch LCD Monitor (Possibly - might not work)