When I take my newer machines in for cleaning/service I always anticipate that the base cost will be at least $100 then add parts etc to that charge. Because the newer machines are primarily computers, the cost does go up.
My old Singer which was purchased in 1970 has no computer chips and when it finally "broke a tooth" on a gear about 5 years ago it cost a bit over $100 for parts and labor.
I know that my newer and more complicated machines would cost more, and in fact, I'm about to find out soon since one machine is "sick".
But $200? I'd want an itemized statement for that, and would expect to see the parts that needed replaying.