I found and excellent stylist in Boston who does cut-ins for a reasonable price. He is a barber who has many years of experience working with hair systems and cutting men hair. I currently use him and I'm very happy with his work. He charges $50 for cut-ins.

His name is David and he is located in Everett, Ma which is approximately 6 miles from Boston. If you're looking for a stylist who does cut-ins in Boston call him at 617-398-9862