WooCommerce Price Drops is a plugin and excellent marketing tool which allows you to lower (or raise) price of a product over time in steps say $10 every hour. This way you can get more buyers and make them spend more time on your site waiting for lowest price they are willing to pay for a product. With this marketing tool you will be able to increase sales, get more satisfied buyers, upsell more related products and increase average time visitors spend on your web shop.