For small volumes of rats it may be better to find a more local supplier. Or look for rodent suppliers who offer free shipping over a certain minimum order. Or check out local reptile shows, and stock up.

Another option if you need a regular amount of rodents on a monthly basis is see if you can add your order to a local pet store's. They may give a discount if you buy in bulk from them. Probably best if you aim for independent pet stores than chain ones. The chain stores may have policies that could prevent them from accepting bulk orders through them.
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