Well I' m from the area, Cooperstown is full of stuck up people, what was the name of the store and in which direction did you go to find it? Maybe they had plans or something, so they had to close, hard telling not knowing.
Reminds me of one time I was there with my wife and niece, we where crossing the street and I said " want to see something funny" they said " sure" so I yelled out, " HEY STUPID" everyone walking on both sides of the street turned around and looked