I am single printer kind of a gal and have been searching for a reasonably priced refill cartridge option. Monoprice is not only reasonably priced, they are fast and the cartridges last as least as long as the brand name ones. This would be a great option for small businesses, too.
PROS: Good price. Fast delivery. Long-lasting cartridge.
CONS: Can't think of a single con from my point of view.