Compatible inkjet cartridges often offer substantial savings
when it comes time to replace the cartridges that came with the
printer. This is mainly due to the fact that manufacturers of
compatible cartridges do not have the higher marketing costs that
OEM manufacturers must endure in order to persuade people to buy
their printers. Also, compatible inkjet cartridge suppliers also
require less inventory, since many different brands of printers can
use the same compatible cartridges.