90000 mile service on 2000 Mercedes-Benz SL500

how much will this cost and what does the service include

Asked by for the 2000 Mercedes-Benz SL500
According to MB service manual it's a fairly minor service:

90000 MI or 144000 KM
Parking Brake Cable
Inspect parking brake cables. Every 30,000 miles or 4 years.

Steering Gear
Retighten lock bolts of steering. Observe torque. Every 30,000 miles or 4 years.