x-D o o m K i t t a y-x
The only place you can find them are from local breeders? Not maybe an animal shelter or the pet store? D:
It's not that there isn't any at some pet stores because there are. A pet store down here in Plano sells them, among many other exotics.
But not all gliders or any animals at pet stores are healthy or well bred.
If you want a healthy pet, your best bet is to find a local breeder or check some shelters (try petfinder.com).
It's been said that the most expensive price you will ever pay is "free". This is especially true of "cheap" animals.
What it comes down to is this; if you cannot afford food and health care (adequate and emergency care!!!) then do not buy a pet.