Depends on the quality you want. If you ant to settle for cogent or some other low qaulity crap, I'm sure you can get it dirt cheap.
If you want the good stuff, global crossing or better, you won't get it cheaper than with swftco.net
Check out
http://www.swiftco.net/ or icq their sales guy at ICQ# 93507395. The more bandwidth you push, the better deal they can get you, and they can get you set up within 24 hours if you need it.