Anne here, currently far from home, giving workshops and talking about writing. Yesterday, taking a break, I wandered into a second-hand bookstore (which is what we call them in Australia), and wandered out again a good hour later, carrying a large bag of books.
I don't often buy books second-hand, but this was an especially well organised bookstore, clean, arranged in genres and with all books shelved by author, in alphabetical order. It was irresistible. I prowled back and forth, trying to remember the names of authors I wanted to try, and just happily browsing.
Some people argue that used bookstores deprive authors of their rightful income — we make no money from sales of used books — and while that's true, I think we gain other advantages. People browsing through the shelves of cheap used books will often try a new-to-them author, and perhaps become a fan. And really, anything that encourages people to keep reading is to be encouraged. And I'm well aware that not everyone can regularly afford to buy new books.