You can buy singles, sample sets of 7, or entire sets here http://www.holdempokerchips.com/

My set of 1000 should arrive tomorrow, but I'm already planning on sending some back. I purchased 700 with denominations and 300 non-denominations. The more I looked at the non-denoms, the more I liked them, so I've arranged to send back 700 to HPC in return for the non-denoms. Guess I'll just have to wait another week or so to break them in during a live game!!