Do any of the companies supply the mice/rats in the containers like you can get them in at Petsmart?
I know this is a late vote, but...we get our bulk pinkies from Big Cheese, and other mice that we need from Zookeepers here in Austin.
I haven't purchased any in bulf yet but have been loking around and comparing and as far as website user friendliness i would say rodentpro.com or micedirect.com they are by far the cheapest i found.