Bookworm has an okay selection if your tastes are limited to literary fiction and children's books. Otherwise the selection is very poor. For example, the science section is limited to one sparse shelf.
The quality of the merchandise is atrocious. Of the ten or so science books I saw, I might have bought four, but three were bent, scuffed up or worn-looking. This is especially ironic given the owner's strict rules, there are signs posted instructing customers not to allow children under six to handle books, not to bring ice cream into the store, etc.
I eventually bought "The Planets" by Dava Sobel, only to find out later that I could have bought it for half the price at Barnes and Noble. I returned to the store the next week and read quietly in the back for a few minutes while waiting for an appointment. I was told in no uncertain terms by the owner to pay for the book or leave, reading was prohibited.
I love independent bookstores, but if the owner is going to make my experience unpleasant, I'd prefer to shop online or at a large chain, where I can find lower prices and a better selection.