Welcome to the Sharp MX-B402 product page. Here you can find information and pricing for your Sharp MXB42NV1 Genuine Sharp Developer Unit. Easy online ordering of your MXB42NT1 Genuine Sharp Toner Cartridge, MXB42NT1, 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.