Core 2 Quad Q6700... I can't find one!

Hi all, its been a long time since I've logged in on here (iPod I used had broken).

Anyway,

I have an old Dell Dimension E520; and as such I am capable of up to a Q6700. While this would be lovely, I can't find one anywhere!
I looked on eBay and they are all ridiculously priced (Around £100, without shipping from America).

Does anyone have an idea where I can get one of these for around £60? There must be somewhere!

If this is in the wrong section I apologise... I am useless at forums.

Thanks.