Chinchilla Lover- It seems that you have some big concerns including temperature and the cost. If you can't afford to make enough well ventilated cages then perhaps you should just start saving your money towards it and leave them in their current cages for now. I understand your reasons for wanting different cages, but all of your reasons are to make your life easier. You haven't given any reasons related to the chin's well being for why you need new cages. It might be less of a convenience for you, but its a responsibility you took on. So until you can afford cages that will be good for your chins, and meet your requirements, you should probably just hold off for a little bit.
I'm in a similar situation...Ever since I got a big Quality Cage for Lady I've been itching to get Lily one to match. However spending $300 on a setup that I want, but don't need isn't in the budget right now. I'm putting away a little extra money a month, and eventually I'll have enough. In the meantime while I hate Lily's current cage for several reasons it is a safe and spacious home that is meeting all her needs, so she's fine for now.
I'm in a similar situation...Ever since I got a big Quality Cage for Lady I've been itching to get Lily one to match. However spending $300 on a setup that I want, but don't need isn't in the budget right now. I'm putting away a little extra money a month, and eventually I'll have enough. In the meantime while I hate Lily's current cage for several reasons it is a safe and spacious home that is meeting all her needs, so she's fine for now.