What is a typical cost for mtb pivot service?

[tuxbailey]

Want to get a feedback on the typical cost for this type of job.

My bike has developed some creaking noise and the pivot and bearings will need to be serviced.

The LBS quoted $150 for labor of taking apart the rear of the bike and replaced the bearings if needed. Cost of parts extra.

I think it is reasonable but not sure if there is a standard. This is in Maryland.