Well if you are talking about things for you site and not for personal use. See if you can find a distributer that sells direct to retailers. You should find some cheap stuff there.
Search for "uk computer part distibuter" or "wholesaler" somthing like that.
Check out my Counter Strike:Source servers:
***THE DYNASTY***: 220.127.116.11:27015
*** GUNGAME ***: 18.104.22.168:27015
*** SOCCER ***: 22.214.171.124:27015