As a former 100+ mile daily commuter, I regularly filled up 2-3 times a week. While $0.05 a gallon more or less may not seem like a lot, over time, it does add up, and I try to save when and were I can. The Cumberland Farms in Medfield center is a self serve gas station and connivence store located along Rt 109.
The good: premium gas is among the cheapest you'll find in the area. Connivence store isn't overpriced, but not the best bargains you'll find. They keep the window washer / squeegee in their buckets, with liquid (you'd be surprised how many places don't). Trash buckets nicely placed, and sufficient parking.
The bad: no mechanic, air pump (seriously, come on), or covered gas pumps (aka not rain friendly). Station can be somewhat difficult to get into / out of, depending on where you're going and coming from. Only self serve, and no diesel.
Don't go out of your way to get here. Better option is driving up 27 a bit (toward Walpole) and trying the station there. read more