If you are just getting started with a small amount of products we recommend manually adjusting pricing to get a feel for the sales potential of your product and where it sits within the market.  However, as soon as you can support it, we recommend using a repricing tool.  Repricers allow you to automatically update prices in real time based on the competition and other important metrics.  If you are a reseller, a repricer is even more essential as it allows you to grab more buy box percentage Repricers allow you to ensure consistent sales volume and that you are maximizing your profit margins.   We have written in depth about how to best use repricers here