I've seen Sal Sagev chips on Spragg's website. Prices there are more than the $100 each mentioned in this thread, but they are available there if you're still looking.

I'm not involved in them at all. Just a referral (without any prompting) in case you are still looking for certain ones.

http://www.marlowcasinochips.com/lasvegas/SalSagev/SalSagev.htm