You should have considered that then before getting one, no? If you bought your snake with intentions of it being perfectly healthy its whole life, then you didn't do your research. If you bought your snake knowing it could potentially have problems, and knowing you wouldn't do anything about them if they arose...then I'm sorry, but that's just plain cruelty.
I've had a dog for almost 10 years now, and we've probably paid twenty times more in vet bills and food bills than we did for my girl, but that's the responsibility you take on when you get any animal--even if it's a $35 snake that "would die in nature anyway".
If you aren't going to help your animal, then give him away to someone who WILL try to help him. After all, it's the least you could do now.