Lexmark Return Program Cartridges are sold at a discount versus the prices of regular cartridges in exchange for the customer’s agreement to use the cartridge only once and return it only to Lexmark for remanufacturing or recycling. Regular cartridges without this license/agreement sold at regular prices are also available. Regular cartridges are also recyclable at no cost through Lexmark Cartridge Collection Program. - The Lexmark C520, C530 supplies are designed to provide exceptional value, reliability and outstanding print quality. - True: Accurate technology. Genuine quality. Environmental focus. It\'s our nature. - Image: Crisp print. Professional documents. Great Impressions. Project your character. - Always: Dependable. Page after page. Year after year. Count on Lexmark.