Amazon employs scarcity tactics to get readers to buy books, and the impact on authors is that they think their books are constantly out of stock when they’re not! If you see something on Amazon that reads—“Only 3 left in stock – order soon”—fear not. It’s not true. It’s possible, of course, that if you’re traditionally published your publisher is low on stock, but usually that’s not the case. And if you’re a print-on-demand author, your book can never be low on stock; Amazon has endless access to endless supply. My best advice to authors is to start ignoring this inventory notice altogether.