selling on a (monthly) installment plan (instalment); hire purchase
mobile sales (e.g. food trucks); mobile catering; route sales
online shopping service (with delivery by mail); mail order; mail-order sales; shop-by-mail service
manufacture and sales; vertical integration
limited edition sale; limited sale
product demonstration; sales demonstration
marketing system; sales method; sales plan
over-the-counter sales; selling over the counter
product bundling; tie-in-sale; package deal
tie-in sale; product bundle
counter selling; face-to-face selling; person-to-person selling
catalog retailing; catalogue retailing
selling in installments; selling in instalments
art of selling; salesmanship
sales cooperative; sales cooperation
animal trade (esp. pets); commerce of animals
over the counter sales (often of financial packages)
sale of goods (as opposed to services)
production, sales and inventory; PSI
mediated marketing; mediated sales
selling costs; selling expenses; distribution costs
selling to traders; wholesaling; trade sales