Mercātus

Based in London, Mercātus works with consumer brands selling on Amazon and other global marketplaces, supporting both Vendor and Seller accounts. The agency positions itself as a marketplace growth partner, taking on end-to-end management of a brand's marketplace presence from initial product launch through to ongoing scaling. Clients referenced include businesses in categories such as glassware, baby products, and cocktail mixers, with the agency typically embedding itself as an extension of the client's internal team rather than working as a separate outside contractor. Services cover marketplace advertising, search marketing and SEO aimed at improving product visibility and sales rank, content optimisation to make listings more conversion-focused, and logistics and operations advice covering both Vendor-model fulfilment and FBA strategies. The agency also offers guidance on marketplace compliance requirements for Sellers and Vendors, alongside competitor and brand insight work intended to inform advertising spend and return on investment. Case studies described include maintaining a best-seller position and top-50 SKU share for an established vendor, taking over and rebuilding an Amazon Vendor account after earlier unsuccessful attempts by the brand itself, and developing new strategies to sustain year-on-year growth for a brand that had seen a demand spike during 2020. The team is small, operating across product listing, advertising, content and account health management for marketplace clients.