Yea, taken to the extreme, I don't think anyone would think it's fair: Restaurant A's pasta is $14.95, printed clearly on the menu. Restaurant B's pasta is $1

Yea, taken to the extreme, I don't think anyone would think it's fair: Restaurant A's pasta is $14.95, printed clearly on the menu. Restaurant B's pasta is $13, with a 15% service fee written in tiny letters on the menu somewhere. Restaurant C's pasta is $2.99, with a 500% service fee written in tiny letters on the menu somewhere. You're paying the same thing at each restaurant. If you think C is sneaky and unethical (which I hope everyone would), then why is B ok?