A carton of Marlboros are under $30 in new Hampshire. They are closer to $45 in Maine now. Same for Mass and VT. Our state govt. just voted down a 28 cent increase.
While they are here, the out-of-staters buy our booze and large appliances as well. The lack of sales tax makes for some prosperous retailers near the borders.
State liquor stores are on the highways, near the borders. A fifth of Bacardi is under $10.
I remember that liquor store right off of the interstate. We used to stop there and stock up on our way back from the Cape. That's a great place!