Meritline offers two Brother LC103-Compatible Inkjet Cartridge 4-Packs (8 cartridges total) for $23.95. (Select "2 Sets" under "Buy More Save More".) Coupon code "MLCE01UM" cuts it to $9.95. With free shipping, that's $1.24 per cartridge and the lowest total price we could find for this quantity by $2. It includes two each of black, cyan, magenta, and yellow cartridges.