Cost for a 50 hr inspection…

I bought a new Kubota 48hp tractor, just got to 50 hours and am being quoted $650 for a 50 hour inspection. Seems like they’re replacing lots of parts - here is the list:

Oil filter Engine oil (10W30) Cartridge filter O-ring Hydraulic element Hydraulic filter assembly HST filter Air filter Outer air filter element UDT2 hydraulic/transmission fluid