Application Programming Interfaces (APIs) are exposed by a service provider to point-of-sale (POS) devices of a plurality of merchants. Product catalogs including product specifications are received from merchants via a merchant support application executing on the POS devices. Pricing records are received from the POS devices of the merchants that indicate prices, locations, and time periods for the prices. Sales data including quantity, time, and location of historical sales is obtained. A price recommendation is provided to a merchant based at least in part on correlations between the historical sales data and pricing.