Emergency, a vet has to drop everything to suit you. Worming is nothing emergency, so now you learned something.
Even $80 is rather steep for vets compared to our locals. You must live in a high price district.
Notwithstanding, rescuing an injured bat with a broken arm cost nearly $2000 before all was done.
Needed X-rays before the clinic closed and just that was not cheap. Treating for shock and pain, not cheap, setting and immobilizing, not cheap. Sort of a shock with an animal hardly bigger than your thumb.