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Marketplaces and Booking Platforms: Airports, Courts, and Inventory

Lessons from Southampton Port Taxi, sports booking, and circular phone commerce — fixed fares, live inventory, and ops that survive peak hours.

Marketplaces fail on operations, not on the landing page. Southampton Port Taxi is a UK cruise-terminal transfer product: book online, know the fare, get to the port. The hard part is the fare graph and the exception path when a ship is late.

Sports booking is the same shape: availability, payments, no-shows, and a console for the venue owner. Phone wholesale adds IMEI, grading, and dual-currency invoices. We treat those as inventory systems with a public face, not as pretty catalogues.

If your product is ‘Uber for X’ or ‘Airbnb for Y,’ come with the operating rules. We will encode them in Postgres, expose them on Next.js, and give ops a dashboard they will actually use.