MARKETSITE is an online specialist shop for antiques, arcade products, hobbies, and books. Rather than operating as a general retailer, it focuses on selected, often hard-to-find items for enthusiasts, collectors, historians, and researchers, with an emphasis on vintage culture and collecting. Its catalogue spans a wide range of interests, including pinball and arcade machines, slot machines, videogames, foosball, pool and billiards, and related parts and documents.

Hobby offerings include model railways, vehicle accessories, audio, records, photography, tools, musical instruments, toys, sports equipment, and computing products. The book section covers art and collecting, knowledge and nonfiction, lifestyle, and fiction. Listings include both new and used goods, such as model railway track, pinball components, arcade materials, collectible objects, and sporting equipment.

Customers can browse products by category, search the online catalogue, and add available items to a shopping cart. MARKETSITE presents its approach as specialist curation, bringing together distinctive products for people interested in collecting, vintage objects, and focused areas of knowledge