Here are some more rat breeders. Remember to look around at a bunch of different breeders, don't just jump at the first one you see. It's kinda like buying a car, you shop around for a bit then make your decision...

Knight's Tail Rattery, Jacksonville Florida
http://www.knightstailrattery.com/

ARG Rattery, Orange Park Florida
http://www.argrattery.com/
(I like the blinking ratties, lol)

Rock-N-Roll Rattery, Pembroke Pines Florida
http://dumborats.homestead.com/

*Edited to fix link*