Wow. I'm glad I'm going to be doing most of my servicing myself. Air filter: £12, fitting time about 10 minutes without rushing. Oil filter: £6, oil about £50, should be a 20-minute job, mostly waiting for oil to suck out. Couple of special tools (filter cup wrench, oil vacuum extractor) will last forever. Pollen filter is under £20, 15 minute job.
Inchcape did my ATF for £190+VAT, a local indy did my brake fluid for £45 (non-SBC). My front lower ball joints need doing, and I'm not springing for the special tool for that: a local indy has quoted £90 per side.
I've got an A service due in a few weeks (the car's alternative system had it as a "C" for time until I removed the brake fluid change from the list, now it agrees with "A"), which I'll write up and cost in a separate thread.
Of course, I'm starting with a car that doesn't have any MB service history, just a few receipts from an indy; and I intend to keep the car until its old enough that the provenance of the service history is less important than how it looks.