The printer manufacturers, in general, are selling ink, toner and other
consumables at very high mark ups. But to sell these things, they have
to create a printer which the public will buy at low profit margin, but
which is designed to try to require you to buy their consumable goods.
This adds complexity to the designs, sometimes those design features
cause functionality failures or cause restricted capabilities, and they
further add to the cost of manufacture.
It is a poor business model for most consumers, and certainly for
environmental considerations. It also inspires the manufacturers to
make printers which don't last, because they are constantly competing on
supposed improvements, which may or may not really matter in terms of
output, but which generally introduce new methods of further restricting
consumable use to their own products. Further, because the cost of
upgrading the printer itself is minimal, and consumable costs these days
don't vary much between model types and brands, this further encourages
replacing the unit the moment something new comes along or any
mechanical difficulty ensues. In some cases the cost of the printer
with factory provided initial consumables, makes buying a new printer
nearly the same cost as replacing the consumables once.
At least in some countries, legislation is requiring that cartridges be
refillable. This should become universal, IMHO. While it may cause
increases in cost of acquisition of the printer, it will allow for a
much more "natural" process of longevity in the products.
The one current exception to the common business model is Kodak, which
is trying to break this cycle by selling their printers at more initial
cost, but charging considerably less for consumables.
There are a few other product lines coming down the line which are
likely to do the same and they should be supported when they appear.
Again, ultimately, legislation may be the only method to level the
playing field and allow the products to stand on their own merits.
My blog (which has been stagnant for quite a few months now,
unfortunately) does go into these issues in much more detail.
Art
If you are interested in issues surrounding e-waste,
I invite you to enter the discussion at my blog:
http://e-trashtalk.spaces.live.com/