I hate to not go with a local guy, or to endorse one company over another in any way, but I've got to say this company I just used to print up discs is the cheapest, by far, of anyone I looked. They're called Mastertrack, they're in California, and they were really easy to work with. 10-day turnaround, too. Almost too good to be true, but it happened.
Check them out, and by all means post other good places for this, too, if you know of them.