There is a hedgehog central, which I joined when I got my girl. She is a rescue, I didn't know much about hedgehogs but she was being terrorized by dogs in the home, and left in the smallest cage you have ever seen, so I took her.
The one big thing I found out was hedgehogs are not easy to tame and a lot of the times impossible. My girl was already 3 when I got her, I have had her for a year and just now she won't roll in a ball and hiss at me but her spikes are always up. I read they have only been domesticated for about 10 years so are still kind of "wild". Yes they can be very costly if they have health issues, I have a friend that had one and all the sudden he was dragging his back legs, then not using his front well. Come to find out they are prone to a condition that causes rapid bone or joint deterioration. She had a very very hard time finding a vet to see him as the "exotic" vets around here only see certain kinds of "exotics". He ended up passing rather quickly from the disease and it was very expensive. Also, you have to have lots of time to spend with them since even IF you can tame them some you must spend time with them every single day, several times if possible or they will revert back to being "wild."
I would do as racing hamster said and be sure to do lots of research for sure!
