Amazon changes prices on its products about every 10 minutes -- here's how and why they do it

AP Photo/Wilfredo Lee Amazon changes product prices 2.5 million times a day, meaning that an average product's cost will change about every 10 minutes. How do they do it? Simply put, Amazon has tons of data. With all this data, Amazon analyzes customer's shopping patterns, competitors' prices, profit margins, inventory, and a dizzying array of other factors. Amazon also raises prices on uncommon products, and then the most common products will appear cheaper — and people will start to assume t...