SwiftInk offers this refurbished HP 950XL- and 951XL-Compatible Inkjet Cartridge 4-Pack for $44.99. Coupon code "DEAL950" cuts it to $19.99. Shipping adds $5, or get free shipping on orders of $50 or more. This set features black, cyan, magenta, and yellow ink cartridges. A 1-year SwiftInk warranty applies. Deal ends April 8.