CARTRIDGEWAREHOUSE via Amazon offers this Brother LC75-Compatible Inkjet Cartridge 10-Pack for $6.77 with free shipping. That's $0.68 per cartridge, $4 under our June mention of an 8-Pack (this is for 10), and the lowest total price we could find for an 8-Pack by $9. It includes two each of cyan, magenta, and yellow and four of black.