on craigslist in the pet section ppl always post an adoption fee. How much is a good adoption fee for?

it’s a girl! asked: 8-10 week old kittens that have been fixed and fully vaccinated and dewormed?
my cat is due to have kittens at any time and I WILL have all these services done before they are adopted out. someone said $60 but i think that might be too much
PROUD- you can get a kitten [...]