I used to live just outside of Montreal in a town with a population on the low end of medium-sized where the only public transit (at the time I lived there) was a train and a train every half hour would have been a massive improvement over the schedule we had at the time which was more like "one train every two hours outside of rush hour". (Today there's a regional bus system that connects to the Montreal bus system but they've added that since I moved away.)
I'm surprised the town doesn't have a candy store. Asahigaoka village in Non Non Biyori has a candy store and it's even more rural than Nakaumi/Koumi. It doesn't have much else in the way of businesses we've seen aside from an unmanned vegetable stand and a vending machine but it does have a candy store.