Anyone know of a decent parts supplier in the United States where I can buy 1 Unit rackmount Custom Server parts like CPU cooling systems and heat sinks with fans?

I hate buying from over sea's as it takes forever to get the stuff and I'm getting tired of paying the import tax.

I currently need a copper heat sink with fan for a Socket 755 3.8 Ghz CPU but will need other parts in the near future.

I really do not want to pay a high price for this stuff but recently the shipping is like $50 per item to buy over seas.