I actually started breeding my own mice due to the small corn and milk snakes we have. I started with 7 mice around October and from that 7 I have 190 in the deep freezer and probably sold over 100. Though I still have about 16 that I've kept as breeders but I also take a male and move him back and forth between 2 groups of females if I don't need a steady supply of pinks. I get bedding from Tractor Supply and get the Mazuri 9F or 6F from the local feed store. Food lasts about 2 months and bedding is usually a month a bag, as of the last set up I had. I changed tubs and did another type and it lasts about 2 weeks instead of a week.