Davis, in reply to your earlier question, removing an abscess is relatively routine and it doesn't require the expensive diagnostics that something like an RI would need, which will keep your vet bill low. I'd say its safe to assume it wouldn't be over $100. Probably only about half of that. But again, your best bet is to call the closest herp vet and ask what their prices are.
It may not look any bigger to the eye, but an abscess is a serious infection and will not go away on its own, so it'd be best if you could get your turtle treated before he gets sicker, which sadly will happen until the abscess is removed and antibiotics are prescribed to kill the infection.
Have you had any luck trying to talk to your father about this? Or perhaps you could ask your mother? Parents really do respond well to their kids being mature about a situation and I'm still hoping that if you explain to your father the reasons the vet visit is necessary and provide him with info on where he can take the turtle and how much it will cost he may help you take the turtle into the vets. Another option is that the holidays are coming up, perhaps this vet visit could be a gift for you, and you could just ask to take the turtle to the vets early... you still have a few options so don't panic yet, at 14 there's only so much you can do, and being wise enough to know that your turtle needs help and trying to get that help for him is a good start
