Abstract: A merchant system is disclosed that can provide multiple online marketplaces that utilize marketplace product catalog layering. Product catalogs associated with each marketplace may be defined and layered such that products sold by one marketplace may be displayed on and purchased by way of another marketplace. The merchant system might also provide a unified electronic shopping cart for storing purchases made at multiple marketplaces, a unified checkout user interface for completing the purchase of items from multiple marketplaces, and a unified order management user interface for managing purchases made from multiple marketplaces.

Abstract: Disclosed are various embodiments for redirecting orders based on delivery site unavailability. A first delivery site that will be unavailable during an unavailability period is identified, and a coincidence between the unavailability period and a pick-up period of a shipment at the first delivery site is determined, the shipment being currently scheduled to be picked up by a customer at the first delivery site during the pick-up period. A second delivery site is then determined. A notification is sent to the customer of the second delivery site, and a rerouting of the shipment to the second delivery site is initiated.