Vision Supplies via Amazon offers Prime members the HI-VISION HI-YIELDS Canon-Compatible PGI-220 / CLI-221 Inkjet Cartridge 10-Pack for $8.95 with free shipping. (Non-members can spend $35 or more to get free shipping; otherwise it adds $6.76.) That's $4 below the lowest total price we could find for this quantity elsewhere. It includes two large black, two small black, two cyan, two yellow, and two magenta cartridges.