A lot of shops here charge like that - up to 0.015" is X $$, between 0.015" - 0.030" X $$ and so forth.
One place quoted me $220, I figured they didn't need the work...
The set up is once... all it is after that on a run of the mill 'pun intended ' machine...is turning the dial before the next pass...or even easier selecting the amount/program.
Can find a number of things to do while it runs back n forth.