Does Size Matter?

I'm a warehouse shopper. A bargain hunter. Warehouse club over boutique store. Large economy size. I read the shelf tags that break cost down to amount per ounce. So when I'm shopping for a book, I'll tend to steer away from the shorter ones. I'm not looking for a 'read in one sitting' book for my money. My typical leisure reading rate is about 100 pages a day. I normally look for a book at least