I can highly recommend Camden-Grey in Miami. When in Kissimmee, I used them all the time. Decent prices and have just about everything.
Don't forget Paige Sasser at soapsupplies.net for FO's and colourants. She is on the east coast of FL around Melbourne.
So which one was it Ian? I'm curious. Florida Suncoast Soapworks is the only one close enough to me where the gas getting there is cheaper than the shipping (provided I make a day of it and go shopping/dining on Treasure Island while I'm down the way)