I just did the math, and if i got a rack, instead of another cage, then I would save a little more than 100 dollars for the if I got a rack, then save a little more than 70 dollars for a thermostat, because if I had cages then I would have to get the herpestat 2 as opposed to the 1 since there is only one thing being heated as opposed to 2, and I would also have room for another snake as the rack j am looking at holds 3 adult ball pythons. I think the rack will be the way to go once my Firebee is an adult. And I can make some money and sell the 50 gallon for like 200$.