The Lexmark C750 supplies are designed to provide exceptional value, reliability and outstanding print quality. C750 supplies offer an easy front-loading design with a simple, intuitive user interface. In addition, Lexmark has streamlined the number of necessary supplies products from prior offerings. With the C750, the only additional supply product necessary beyond toner cartridges is a simple waste toner container.¤¤Return/Prebate cartridges are sold at a discounted price vs. the price of regular cartridges in exchange for the customer's agreement to use the cartridge only once and return the cartridge to Lexmark for recycling once it's empty. All toner boxes ship with prepaid postage labels for customers to return their empty cartridges for recycling.