Lexmark return program cartridges are sold at a discount versus the prices of regular cartridges in exchange for the customers agreement to use the cartridge only once and return it only to lexmark for remanufacturing or recycling regular cartridges without this licenseagreement sold at regular prices are also available regular cartridges are also recyclable at no cost through lexmark cartridge collection programlexmark cartridge collection program includes various methods of return and spo