Nikki is absolutely right on all her points. And often when you get a new pet, the pet might have a medical issue come up.
My hedgehog had skin issues arise shortly after I got her and the frequent vet visits plus the special shampoo she needed and special antibacterial lotion she needed came out to more than 300 dollars. Even with a vet familiar with them it could take a long while to figure out the reason a hedgie is sick and you have to go through several consultations and trial and error. It took nearly 2 months until she was a lot better. And I have to give her special oat meal baths and make sure her skin stays moisturized because her skin is so sensitive. That costs money too and keeping her warm during the winter has doubled by electricity bill. They require a lot of work, time, and money and you are always learning ways to take better care of them.