hey and welcome to Paw Talk! I own three sugar gliders. They've been in my family for about seven years now. I love my guys to bits! Gliders are VERY sociable animals and I would suggest buying more then one or they could become very depressed. It's preferable to buy them when young and from a breeder.
Sugar gliders are a lot more difficult to keep then a hampster or a gerbil so a lot of research is necessary. They also require special diets and a larger cage.
Don't let all this scare you because they really are awsome pets and love attention! lol