Thats a good question. I have 34 snakes, 2 babies on the way, more eggs on the way, a Caiman, and a Nile monitor and I still but what I need for now, but I have been getting ready with the help of raverthug.. to build a rack and start breeding our own rats, costs me about 80 a month plus a 10 dollar rabbit for my large snake, so I assume it is time....