Abstract: Systems and methods for trading-in and selling merchandise using electronic commerce are disclosed herein. A system for trading-in and selling a product includes a dynamic pricing guide that determines an initial value of a trade-in product; a product profiler that provides product intelligence; a product profile manager tool that delivers real-time access to product information and collects product information; a trade-in manager tool that accepts, processes and manages the trade-in of the trade-in product; an automatic merchandising agent for locating at least one marketplace to sell the trade-in product; a smart syndicator for syndicating a product catalog of trade-in product profiles across multiple online channels; and a multi-channel merchandising manager tool that manages collection of metadata regarding sales cycle and marketplace performance for the trade-in product and updates the product catalog.