X-Data Business Machines Ltd has released an advertising campaign that states the sale price of one of its computer packages - HSC - SSCE Business Studies - Question 2 - 2004 - Paper 1

Resale price maintenance refers to an agreement between a supplier and distributors, where the supplier sets the minimum price at which distributors can sell their products. By insisting that distributors sell only at the advertised price, X-Data Business Machines is imposing such a minimum sale price, hence breaching this aspect of consumer law.