I recently had an experience with a marine repair service that quoted me a labor rate of $110/hr here in the Lake St Clair area. He arrived with an assistant and completed the job in about 3.5 hrs. He subsequently billed me at $220/hr for a total of $910. I called him about his "mistake" and was told it was correct because the charge was $110/hr/MAN. I was shocked had what he was trying to pull on me, and refused to pay the full amount, instead paying at the rate of 4110/hr. What is the standard for billing marine services in the Great Lakes area and have others had similar experiences?