Welcome to the Lexmark X-2550 product page. Here you can find information and pricing for your Lexmark 18C1529 (29A) Genuine Lexmark Ink Cartridge. Easy online ordering of your 18C1528 (28A) Genuine Lexmark Ink Cartridge, 18C1529, 18C1528, 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.