Although you didn't specify exactly what kind of product you were looking for, the company I work for has had a lot of success with CableWholesale for bulk cat5, etc. I don't know if they have us on a higher pricing tier than most resellers, but if you need bulk network cable, give them a look.
If not, specifically what are you looking for?
China's great, we use overseas factories for many of our products, but we've also had a number of horror stories as well from serious quality control failures - caveat emptor.