Not sure but you could always look on eBay and see what kind of deal you can get. If you're in the UK you could look on Scan.co.uk which is a pretty decent site, I've got quite a few components off there and so far no issues with them.
eBay you can get decent parts if you're willing to look around. I've just bought an old EVGA GeForce GTX 460 SuperClock which cost £40 + £5 for delivery, I didn't need it but I like them so it was an impulse purchase.