I was going to add C+J until I saw you were in western MA

I ride CJ from NBPT and even with the price increase to $92.00 it still works out to 9.20 each way. At 41 miles from my house to BOS it would take 1.6 gallons of gas or 6.46 in gas. So basically unless I can park for $0.67 per day on a four day it ends up being a great deal. The company reimburses me 70 of the cost so im out of pocket 22 bucks.

Ok that doesnt help you at all. Pauls parking is where I would park if I did not use CJ, it is the best deal around. I have also heard about talking to hotels and seeing if you can park there and ride their shuttle but I have no actual intel on that.