How expensive is it to use for 8x10 photo's? I got one a couple of years ago thanks to a crazy staples trade in deal, but now the ink is starting to get used up and I need a printer to use at a county fair. I have the Canon I9100 and this HP Officejet Pro 8000. Apparently the Canon cost about a dollar per page in ink, but im having trouble finding out how much on average the HP will cost. And the 4 pack is about $100 on amazon. Its a bit of an investment. While the Canon 6 pack is $55, that should be good for about 60 pages. So those with the HP 8000 printer, what do you estimate to be your average cost per page?