I guess it's not a "tea" store. It's called Cook's Shop Here, 65 King Street, Northampton, Massachusetts 01060
I haven't been there yet. But had a talk given by the owners of this store, Robert and Mary Lou Heiss. They are also the author of the book "the story of tea". I haven't read the book either But it looks like they know a lot about tea, they traveled to quite some tea fields and they sell tea. So I guess they have some good teas, along with other kitchen stuff in their store.