AC Maintenance - High Price?

Brownstoners – in our recent renovation we installed a Fujitsu Mini Split system with 2 units on the roof and 7 zones distributed throughout the house. We also installed a cooling coil on the Furnace for the Garden apartment (with a separate unit on the roof). We’re looking to have the system maintained, and I would prefer to use the installer, however they have quoted us what I think is a ridiculously high price for AC maintenance and what they estimate is about 6 hours of work. They want $2400 for a yearly maintenance contract or $1400 for a one time summer prep session to prepare for summer. Am I wrong to think those are way too high and this should cost less than $1000 for an annual contract?

Would love to hear what others pay for AC Maintenance and if you have a service provider you would recommend.

Thanks!

B