Review on High-Quality 5pcs Canon PGI 250 CLI 251 Ink Cartridge Set for PIXMA MG5420, MG5422, MG5520, MG5522, MG6420, IP7220, MX722, MX922, IX6820 Printer by Paul Evangelista

These ink cartridges do exactly what I need and do the right thing. They were very reasonably priced, for a fraction of what I've paid elsewhere. My guess is that all four colors plus the extra large black tank come in one package. So I always have the color I need right now and the colors I need when their time comes. But be sure to order another pack afterwards!