Kodak and some recent HP models offer "low ink usage" in their ads. Its up to the user to say, yeah they use low ink. Some users have run to a new font type that of itself uses less ink, google for that fix. You may want to look at Canon printers while not the lowest user of ink, do tend to be practical in ink usage and in many cases using "refills" tends to be cheaper than others.
I'll mention that color or plain B&W laser printers up front may cost more to buy but they do tend to be cheaper to operate. The cost per page is far cheaper than many inkjets out there and output is just as good, excluding demanding photo outputs.
Anybody know of a decent printer that uses low ink. I have a MP980 and it sucks up the ink.