We've got one in the office for CAD plotting and the boss lets me use it for printing photos. I'm not sure about the economies of printing itself, I bought the paper and use their ink but when I read the manual the potential maintenance costs are huge on it.
We've got an HP Z2100 and I think it recommends replacing the heads every 6 months or something like that, we don't because we don't use it enough but if it was getting used all the time it would cost a bomb to run.
To be honest, if it's just printing for yourself and not as part of a business I think you'd be much better off buying the prints in from a pro lab as and when you need them.