The product this city is famous for is the product a marketplace fulfilment network cannot handle. Crab and oysters ship cold, ship on named days, ship against a cutoff and a weather forecast, and no third-party warehouse is going to enforce that on your behalf. That stays on the channel you control, where the cutoff logic can be built into checkout. What does travel is everything adjacent: the seasoning, the sauce, the dry mix, the tin, the gift set, the mallet, the shelf-stable version of the thing people already associate with the name. That split is the first piece of work and it decides the whole channel plan.
The second thing that decides it is what the platforms will let you list at all. Lab consumables, diagnostic supply and anything with a hazard classification run into restricted categories, dangerous-goods review and expiry-dating rules that quietly disqualify a chunk of the catalogue before a listing is ever written. Food brands hit their own version of it — ingredient and allergen declarations, best-before handling in a fulfilment centre, and pack formats that fail a compliance check for reasons nobody explains. We run that review up front, because discovering it after you have paid for photography and A+ modules is an expensive way to learn a fee schedule.
What is left gets built properly and then defended. Titles, bullets, backend search terms and variation parentage rebuilt so a family of sizes and heat levels pools its reviews instead of scattering; A+ and Brand Story modules produced to each platform's fixed specs; Sponsored campaigns split by intent and margin band with targets taken from contribution per unit after referral, fulfilment and returns. Then the monthly work almost nobody does — reading the fee and returns reports, chasing reimbursements for stock the network lost or damaged, and checking that the buy box is still yours.