Big cheese and perfect prey I've ordered from. I've heard good things about cold blooded cafe. Big Cheese and Perfect Prey vacuum seal their bags so they last longer and Perfect Prey offers smaller bags - fewer rodents in each bag - so you don't have to worry about a 25 bag going bad with one BP. I think they will sell a ten bag.

FYI - Rule of thumb is IF vacuum packed up to two years in freezer total. So you can use for up to 1 1/2 years because the rats will stay good (or any frozen prey for that matter) for 6 months in a zip lock after being taking out of a vacuum seal.

Even if it's a little more per rat, it will still be cheaper and better quality than Petco or Petsmart, etc.