I got them removed when I was a teenager; so being that my parents paid for the removal (thank goodness), I don't know how much it costed.
But on top of what has been said, wisdom teeth should only recommended to be removed if they are coming in at a bad angle. My wisdom teeth were coming in at a 45° and pushing my other teeth forward. It hurt a looooot to open my mouth.
If your dentist tells you to get the wisdom teeth removed even if they are coming in at an okay angle, I would have concerns about that dentist in particular.