Basket Size Drives Online Grocery Profitability

This claim points to the core trap in online grocery, volume only helps if each delivery carries enough gross profit to absorb a mostly fixed pick, pack, and drop cost. In dark store models, adding one more small order adds another picker, another bag, and another courier trip, but not much extra gross profit. That is why moving a customer from a £10 snack run to a £25 or £50 basket changes the math far more than simply pushing more orders through the system.

• The clearest evidence is in the order model itself. With pick and pack held at £1.7 per order, raising AOV from £10 to £25 and £50 cuts labor and delivery as a share of revenue from roughly 40% to 8 to 17%, and flips contribution margin from negative to positive.
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• Interviews across the market land on the same point. Farmstead argues baskets under $50 are very hard to make profitable in the US because delivery and labor can each run $5 to $15 per order. Another operator frames the split as impulse baskets around £15 to £20 versus weekly shops closer to £100, with the larger basket carrying much healthier economics.
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• This is why assortment and merchandising matter so much. The job is not just getting more orders, it is getting customers to add one more dinner ingredient, one more produce item, one more pantry staple, so the same trip carries more margin. Farmstead reached $80 plus baskets with only 1,500 SKUs, showing selection can be optimized for basket building rather than supermarket like breadth.
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The next phase of online grocery will be won by operators that turn convenience trips into fuller weekly baskets without raising prices too aggressively. The strongest models will pair tight SKU selection, personalization, and reliable in stock rates to steadily lift basket size, because that is what converts delivery from a cash drain into a scalable habit.