In an effort to control and reduce the refilling and redistribution of toner cartridges, Lexmark began distributing two distinct varieties of its toner cartridges. Under its Prebate Program (now known as the Lexmark Return Program), through a shrinkwrap license, Lexmark sold certain printer cartridges at a discount (as much as $50 less) to customers who agreed to "use the cartridge only once and return it only to Lexmark for remanufacturing or recycling". Lexmark's "Non-Prebate" cartridges could be refilled by the user without restrictions and were sold without any discount.