Thanks lolo76. That is exactly what I meant. Yes, I have the money for it available. But nobody that I know would spend $40 - $100 on something that they didn't think was absolutely necessary.

And to Dustin - We have a big enough 'buffer zone' of cash to cover a $50 vet visit, regardless of what happens. Anybody who can't come up with $50 after unexpected car repairs shouldn't have any animal depending on them, I agree with you there. However, I don't appreciate being told I shouldn't have my snakes just because I'm not prepared to invest in a thermostat. I spend plenty of time, energy and money on them as is. I do appreciate your input, though. I know you're only concerned for the animals.