Meritline offers this Canon PGI-220 / CLI-221–Compatible Inkjet Cartridge 10-Pack for $17.95. (It's the second option from the top.) Coupon code "MLCK9W14SNL1" drops it to $9.95. With free shipping, that's $6 under our March mention and within a buck of lowest total price we've seen for this ink in this quantity. These cartridges fit several Canon PIXMA inkjet printer models. Coupon expires after 1,000 uses.