Category killers are specialty stores.
One is supposed to get the idea that it has everything one could possibly want. Comfortable stuffed chairs and sofas are scattered around in the rows of books to encourage patrons to sit and stay awhile. As far as I know, the idea for the format was borrowed from the Tattered Cover Bookstore in Denver. Click here to go to the Tattered Cover. It also has a membership program that offers discounts to frequent buyers.