A Publisher's Conversation with Authors: Getting Inside Amazon’s Head (Algorithm): How Sales Velocity Shapes Your Book’s Fate
If authors understood only one thing about Amazon, it should be this: Amazon rewards movement. Not prestige, not quality, not awards— movement . And the metric that captures that movement is sales velocity . Everything else—pre‑order buttons, Prime shipping, “In Stock” status, Buy Box control, overnight delivery—flows from that one concept. Let’s break it down. 1. What Sales Velocity Actually Means Sales velocity is the rate at which your book sells over time . Not total sales. Not lifetime sales. Speed. Consistency. Recency. Amazon’s algorithm tracks: How many copies sold today How many sold yesterday How many sold this week Whether the trend is rising, flat, or falling A book that sells 20 copies in one day after selling none for a month looks “hot.” A book that sells 20 copies every week looks “reliable.” A book that sells 2 copies a month looks “dormant.” Amazon adjusts its behavior accordingly. 2. How Sales Velocity Affects Amazon’s Decisions A. Pre‑Order Button Activa...