I live in MA too and have only found one LCS near where I live. It's in Tewksbury, MA, not a great wax selection but it's ok.
If I go a little further, there's Chris's Cards & Comics
and they have a pretty nice wax selection and some singles for sale too (the Salem location is better than Seabrook IMO).
Also, there's the gbscc.com and they have monthly meetings. If you ever want to attend, let me know and we'll meet up. I'm new to MA and don't really have any friends up here, especially none that collect cards.