I think you may be trying to get an idea of what to breed and sell them for? If so, I breed rats and mice and was hoping to sell surplus (which I have a lot of) but I have to sell for at least double what places like Rodent Pro sell theirs for just to pay for the food they eat. I'm still cheaper than pet stores but it's easy to get them a lot cheaper buying in bulk online.
Don't know if that helps you or not.