never buy anything Lexmark.
There's more to it than that though -- the entire printer market is a mess that's good for manufacturers, but bad for consumers, the economy and the environment.
There has been no major innovation in printing technology since the start of the century. Ink dot sizes are limited by physics and as small as they need to be for most consumer uses. Manufacturers basically sell us the same thing every five years. To encourage us to upgrade, they make the cartridges harder to buy locally... but that strategy is now useless as all they've achieved is that it's now a practical impossibility for any average-sized shop to stock ink cartridges, and you can only get them from superstores or order them online, and in the process they've killed off stationers, as they can't supply the office consumables you're mostly likely to want to buy at short notice. As a result, we're dumping otherwise serviceable printers at an unsustainable rate (and in the process, we're ditching working scanners, too). And the custom firmware on each one means that you have to ditch a working wifi printer and spring for a new one because that new tablet you got for Christmas only uses a particular protocol.
It is time that someone stepped up to the plate and produced an international standard for serviceable inkjet printers with a standard head assembly that can be easily pulled out and replaced on breaking, featuring refillable ink reservoirs, and with a standard firmware that can be updated when new protocols like Airprint come out.
A modular design that means you can upgrade from A4 printing to A3 by buying a bigger case with a longer print track. Where upgrading from mono to 4-ink or even to 7 ink isn't a matter of buying a whole new machine, but just swapping out the head assembly.
Not only would this reduce waste and long-term running costs, but local shops would be able to stock ink and printer supplies again. Everyone wins. Except HP, Epson and Lexmark.