To promote as if for sale.
To engage in in-store promotion of the sale of.
To engage in in-store promotion of the sale of goods, as by display and arrangement of goods.
Goods which are or were offered or intended for sale.
Commercial goods connected (branded) with an entity such as a team, band, company, charity, work of fiction, festival, or meme. (Commonly shortened to merch.)
To promote a thing or idea to another person, usually informally.