The real cost of last mile
Distance, density, and failed attempts
Density is the lever
Orders per hour in a postcode cluster drives unit economics. Hyper-local dark stores exist to raise density — not to chase nationwide logos.
Failed hand-offs are silent margin killers
Reattempts and refunds show up scattered across finance. Tag them at fulfilment source to see true cost.
Promise what the building can keep
Cut-offs and delivery windows should follow pick capacity and driver pool — synced from the same system that runs the board.