Disclosed are systems and methods for managing transactions in which an order is specified online and payment is received at a point of sale (POS). Methods are disclosed for managing payment for such transactions at a POS, including transactions involving payment for both in-store purchases and online orders. Methods are also disclosed for managing inventory and price changes for such transactions where payment can occur at any time in a pay period following order creation. Also disclosed are methods for processing refunds for online orders for which payment was made at a POS. Finally, methods for preventing fraud and abuse as well as restricting the availability of this payment method for certain items are disclosed.