Sorry, but I think the price of service is very dependent on your going rate in your area. Here the rate is slightly lower if it's not an embroidery machine, but I *think* my dealer is charging $185 for servicing now. I get my first year free as my machine was purchased new, but after that I pay. 12 years ago to take my machine in for service it was $95. But, I can see that cost of living goes up and it's probably harder to service the newer, computerized units. You need specialized training, which must be paid for by someone!
As an aside. I took in my 1970's Morse to be fixed. I purchased it and couldn't get it to work. The feed dogs were broken. I paid $20 for the machine and $69 for the service.