hi all ive been buying my feeders for my ball python from the local pet store @ about 1.19 each. i will soon be purchaseing a second snake and am thinking it might be wise to buy in bulk online. how long can you keep frozen rodents. im feeding ginger 1 adult mouse a week. i would have to buy at least 100 mice to make up the cost of shiping. or should i continue to buy my mice locally untill i have the other snake and im buying for 2?