Lexmark T630, T632 and T634 supplies are designed for the highest quality output, page after page, thanks to technical experience, high production standards and rigorous product testing. The supplies are designed for easy customer installation and quality performance, from the first page to the last. The 5, 000-page Print Cartridge makes an excellent choice for excellent choice for customers with unit price sensitivity and low print volumes. 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.