Old PC selling price

[Inverted_Walrus]

I'm going to sell my old gaming computer and I'm not entirely sure on how much I can sell it for. 

Here are the specs. 

R.A.M: 8GB 1600MHz [2X4GB]
CPU: AMD FX-4100 Quad Core 3.6GHz
GPU: GTX 760 [msi] 2GB VRAM
HDD: Samsung 7200rpm 642GB
SSD: Samsung 840 pro 256GB
Network Card: TP-link cheap thing
PSU: OCZ tech 500W 80 plus
Case: crap, no more than £10
Disk Drive: Unknown
Motherboard: asus M5A USB 3.0

The current price I am thinking of selling it for is £300 ($437.15) so tell me what you think it's worth. 

P.S. It costs around £500 ($728.58) new at the moment.