Costco expanded same-day delivery partnerships with Uber and DoorDash to cover all United States markets where the warehouse club operates, according to Retail Dive. The retailer already tested delivery with both platforms regionally; the nationwide rollout puts Costco inventory in front of customers on two separate apps without requiring the company to stock separate fulfillment centers or hire its own drivers. Members order through the Uber or DoorDash app, the platform routes the order to the nearest Costco, and a gig driver pulls product from warehouse shelves for delivery within hours.

The mechanic is simple: Costco lists inventory on multiple third-party marketplaces simultaneously, letting each platform handle customer acquisition, payment processing, and last-mile logistics. The warehouse absorbs no incremental real estate cost and no vehicle fleet. Uber and DoorDash compete for the same customer, but Costco collects revenue from both without choosing a winner. The retailer maintains one SKU set, one price, one warehouse—distribution scales without operational duplication.

This works because physical products already sit in a location accessible to drivers. Costco did not build a new infrastructure layer; it opened existing stock to external routing systems. The platforms pay for customer attention and delivery labor in exchange for transaction fees. For Costco, the arrangement turns foot traffic into digital reach and converts membership dues into delivery frequency. The member gets speed; the retailer gets incremental basket size from customers who browse on a phone instead of driving to the store.

A small physical-product brand runs the same play by listing the same inventory on multiple fulfillment networks that pull from a single stock location. Start with one primary warehouse or garage staging area. List those SKUs on Amazon FBA, Shopify with a local courier integration like Roadie or Dolly, and a regional same-day service such as Postmates or a white-label delivery app used by local grocers. Each platform sees the same products, same availability, same pricing. You fulfill from one address. The customer chooses the app they already use; you capture the sale regardless of which platform wins the session. Cost: platform transaction fees—typically 15-30% of order value—but no new rent, no second inventory pool, no dedicated fleet. A 500-unit run of drinkware or home goods sits in one room and ships through three or four channels within hours.

The broader pattern is logistics arbitrage. Brands that own product but rent distribution avoid the capital trap of vertical integration. Costco could have built proprietary delivery; instead it borrowed existing networks and turned infrastructure into variable cost. For the one-person brand, that means never buying a van or signing a lease on a second location. Stock once, route many ways, let the platforms compete on speed and customer experience while you compete on product.