I would like to comment on this. For a long time people were bad mouthing these because the printer comes with a Starter Toner. It does not last that long. The toner has a chip in it that prevents you from re-filling it. If you choose to refill, the printer works at a significantly slower speed.
HOWEVER, there are now chips available thet you can use to replace the chip on the side of the toner cart. I was skeptical but bought one through ebay.....through a company called TonerKing and sure enough the chipped worked.
It reset the toner back to 30o0 pages and is now again ticking down.
You need a new chip each time the chip hits 0.
You still need to buy toner refills.
This is not cheap, but it IS cheaper than the $90 PER TONER I was paying from staples.