Yet another question in my continuing series on money matters…

I just placed an order with a tailor for about $200 worth of alterations (a lot of shirts, and a repair job on a bag). Is a tailor in the category of service people whom one is expected to tip? If so, how much do you tip? I have received good recommendations about this business and if they do a good job, I would expect to go back.

Thank you in advance.