I would recommend http://www.rodentpro.com/index.asp they have a huge sale going on right now and when you order enough, like Snowshredder said, it pretty much cancels out the shipping cost. I JUST made an order with them, and I bought everything from weaned to large rats and even a rabbit. With all that combined it only costs $1.60 per rat including shipping. This should last me about 6 month s!
I also breed my own ASF rats as well.
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