Even with just one snake I still believe it's more cost effective to buy from an online source if you can't get your frozen feeders at an expo or have a trusted local supplier. I was paying $13 for 4-6 pet store feeders. I also use Big Cheese. If I ordered (25) rat pups, (20) weaned rats, and (15) small rats from BC it would cost me $105 with taxes and shipping included. For one BP those (60) feeders are almost a year's worth of food. A (4) pack of Arctic Mice rat pups are $13 and (2) small rats are also $13. The same $105 would buy (8) boxes of pet store feeders. That would only get you (16) rat pups and (8) small rats or (24) total feeders. It's kind of a no-brainer to me.