I go to M salon on Newbury Street (actually it's on clarendon street which is the 3rd right off the beginning of Newbury St. He charges me $120 for a cut, color and blow dry. I have shoulder length hair. What a cut and style I love that place. My hair has never looked better since I've been going there.
That is actually less money than it cost me here on the Cape, ($155), so I feel I'm getting a better color, cut and style for a lot less!
I think all the salons and a lot of the stylist set their own price, so I would bring a couple of hundred dollars with you. A lot of places in Boston don't take credit cards, debit...some take personal checks and some just cash. That used to surprise me but I run into it a lot in salons and restaurants around there.
Have Fun!