Printers are the best example of the worst case scenario of DRM.

Not too long ago I obtained a office printer from Brother. Came with Cartridges. After only 4 papers these Cartridges where empty, or rather, it claimed to be empty. In reality they were still sloshing full of ink. Tried chinese cartridges for 2$ but had to settle for the 20$ ones from Brother.

The windows driver comes with all kinds of malware (even a toolbar was included!) so I settled for PostScript, which the printer thankfully supported.

I have since resold this piece of garbage on ebay, went back to my trusty old HP Laserprinter with cheap chinese cartridges.