photo printers dead technology?

This blog entry in popsci is interesting and mentions the price of printer ink typically runs between $3000 and $5000 a gallon. I know i don't use my printer that much, and hardly ever for photos. I find that when i want to do a photo print, inevitably the ink will be dried up and useless, so I'll have to pay another $40 to get a new cartridge. Might as well send it to one of a zillion online photo print services.