# Costco hit $33 billion digital revenue in 2026 on warehouse-fulfillment DoorDash and Uber Eats drops *The warehouse club turned third-party delivery apps into last-mile engines without building its own fleet.* By **Jenny Huang Goodman MPA MSc MHSA, Principal** — The Stash Edge, Hako Shikin LLC. Published 2026-09-25. Canonical: https://www.pops4.com/stash/articles/costco-2026-09-25t06-1 Subject: Costco Tags: costco, omnichannel, third-party-logistics, marketplace, fulfillment, distribution --- Costco logged **$33 billion** in digital sales in 2026, up more than **20%** year-over-year, according to Modern Retail. The growth came from three channels: direct-to-consumer online orders, third-party marketplace integrations with DoorDash and Uber Eats, and warehouse-based fulfillment that skipped the dedicated dark-store buildout. The company routed delivery through existing warehouse inventory rather than investing in standalone e-commerce centers. Orders placed through DoorDash or Uber Eats pull from the same floor stock a walk-in member buys, then hand off to platform couriers already running routes in the area. Costco avoided the capital expense of a proprietary delivery network and the operational drag of managing a separate SKU set for online-only fulfillment. The mechanism works because Costco's assortment is narrow and high-turn. The average warehouse stocks roughly **3,800 SKUs** compared to a typical grocery supermarket's **30,000-plus**. High volume per item means stock accuracy stays tight and picker efficiency stays high. When a DoorDash driver walks in with a batch, the items are almost always on the shelf in predictable locations. The brand also benefits from unit economics most physical-product retailers cannot match: average basket size at Costco runs well above **$100**, which covers last-mile cost and platform commission without destroying margin. Third-party platforms brought speed and density Costco could not build alone. DoorDash and Uber Eats already operate fleets optimized for regional coverage, peak-hour flex capacity, and driver liquidity. Plugging into those networks gave Costco same-day and one-hour delivery windows in hundreds of metro areas without hiring a single courier or buying a single van. The trade-off is commission, typically **15-25%** of order value on these platforms, but Costco's membership-fee model and bulk pricing structure absorb that hit better than a conventional retailer running on thin grocery margin. The play works for a small physical-product brand if you flip the script. Instead of building your own storefront and your own logistics, list your core SKU set on an existing marketplace that already has the traffic and the trucks. A candle brand or a protein-bar company can go live on Amazon, Shopify-plus-fulfillment, or a regional grocer's online shelf and immediately access last-mile delivery without warehouse lease or fleet overhead. The key is to keep the assortment tight—**six to twelve SKUs** max—so you maintain stock accuracy and fast replenishment. High per-unit price helps: if your landed cost per item is under **$8** and your retail is above **$25**, a **20% platform fee** still leaves margin for you and速度 for the customer. Pick one marketplace, load a focused assortment, and use its existing fulfillment. A soap maker can ship a standing inventory of **200 units per SKU** to Amazon FBA or a Shopify fulfillment center and let the platform handle pick, pack, and same-day delivery in major metros. A spice brand can pitch a regional chain's online grocery portal, supply a planogram of **eight SKUs**, and ride the grocer's Instacart or DoorDash contract for delivery. The cost is the commission and the wholesale margin, but you skip the **$15,000-per-month** lease on warehouse space and the **$8-per-order** cost of running your own logistics. Costco's result proves that owning the last mile is not the only path to digital scale. Borrowing someone else's fleet and someone else's traffic can move volume faster than building your own, especially when your product turns fast and your unit economics can cover the toll. ## The takeaway Costco did $33B digital on third-party delivery by using warehouse stock and borrowed fleets instead of building its own logistics. --- ## Publisher **Hako Shikin LLC** — Virginia Beach, Virginia. Founded 1997. ASI 217876 · DUNS 18-204-6339. Principal and author: **Jenny Huang Goodman MPA MSc MHSA**. - Author: https://www.huanggoodman.com/about - LLM context: https://www.pops4.com/stash/llms.txt - MCP endpoint, for AI agents: https://mcp.pops4.com/mcp - Client dashboard: https://dashboard.pops4.com/ - Catalogue: 70,000+ products, 200+ brands