A method and a system that identify seller ads to potential buyers within a network-based commerce system are provided. The method and system may operate to receive a request including a product identification and financial metrics from a seller, and assign to the seller, based on a distance function and the product identification, a matching identification entry included in a set of identification entries. The method and system may further include operations to identify one or more seller ads associated with the matching identification entry, as determined by a relevance function based on the financial metrics and a distance measured between the matching identification entry and at least one extracted identification entry extracted from a selected content page and included in the set of identification entries.