Welcome to the Lexmark X-3550 product page. Here you can find information and pricing for your Lexmark 18C1524 Genuine Lexmark Ink Cartridge. Easy online ordering of your 18C1571 Genuine Lexmark Ink Cartridge, 2/Pack, Black; Tri-Color, 18C1571, 18C1524, 18C1523, can be completed from this page. Tonerprice.com backs all of our cartridges with our exclusive warranty. As always, we provide free ground shipping on orders over $75 within the contiguous United States from 5 warehouses nationwide.