I've just ordered another set of these for another new printer. They have an outer chipped cartridge that you add a replaceable ink tank and it resets to full. The refill ink tanks are around $3 each and hold 3X as much ink as the originals, and the empty ink tanks can be traded in at Staples for $3 credit each, so ink is almost free ($6 per order shipping). Might want to check it out.
http://ccs-digital.com
