It's interesting to note that you can save quite a bit on ink or toner cost if you chose the right font. So give some though to the fonts you use and set your default font to something printer friendly.
When Printer.com tested popular fonts for their ink-friendly ways, Century Gothic and topped the list. Calibri, Verdana, Arial and Sans Serif were next, followed by Trebuchet, Tahoma and Franklin Gothic Medium. Century Gothic uses about 30 percent less ink than Arial.
A very good article going into much greater detail can be found here:
So check it out for some simple changes that will put some money back in your pocket.