Several.

the quality varies though, try the ready ground:

http://www.coffeecravings.com/espres...cfl021DGROUND/
http://www.coffeecravings.com/espres...acas/cfl55195/

or green:
http://www.1st-line.net/cgi-bin/cate...1lb&type=store

I have tried green beans in the past - using the water treated bean.
some were very drinkable - play around with roasting your own and
you'll keep improving the flavour.