Costco pushed same-day delivery nationwide through partnerships with Uber and DoorDash, according to Retail Dive, at a moment when same-day delivery is showing strong shopper demand. The play looks like distribution. The mechanism is customer acquisition.
The warehouse club already requires membership to buy, online or off. When a shopper orders Costco product through Uber Eats or DoorDash, the platform handles discovery and delivery. Costco captures the name, email, and buying pattern. The third-party app becomes a paid lead source that also moves inventory. Competitors using the same platforms pay 25-30% commission and get nothing but the transaction. Costco gets the transaction and the lead, and the platform pays for the privilege of delivering.
The timing matters. According to Retail Dive, same-day delivery is resonating with Costco shoppers, meaning conversion rates justify the logistics cost. That resonance creates room to scale the partnership without degrading unit economics. The membership model inverts the usual marketplace incentive: Costco does not need to defend margin on a single order because lifetime value accrues through the annual fee and repeat purchase across categories. The delivery partnership becomes a membership acquisition channel that happens to generate revenue on the first touch.
The steal works for any physical product brand with replenishment potential or high consideration. Partner with a third-party platform where your customer already browses—grocery delivery, subscription box, curated marketplace. Negotiate for customer contact information as part of the partnership terms. Offer the platform exclusive SKU bundles or early access to new product in exchange for email capture at checkout. Build the deal so the platform funds your customer acquisition while you retain the relationship.
Run a 90-day test. Pick one platform with existing category traffic. Provide 3-5 SKUs, ideally hero products with strong reviews. Require email opt-in at cart for a platform-exclusive offer: early access, bonus unit, extended warranty. Track cost per acquired email against your standard paid social CAC. If the platform lead converts at 1.5x your usual rate because the third-party endorsement pre-qualifies intent, expand the catalog and negotiate better terms. If it does not, pull inventory and test a different platform with tighter audience fit.
The broader pattern is distribution as acquisition infrastructure. Costco turned Uber and DoorDash into field reps who pay to work. A small brand can run the same inversion at smaller scale: let someone else pay for the first touch, then own the second.