I suspect that my usage pattern would be somewhat similar. Though I'm tempted to adopt a habit of cycling between different photos adorning bits of the house, which might mean more of the ink actually got used.

I've been noting dimensions in my table of candidate printers, since I've a plan about where I'd like to put it. I could generate some more space if necessary by replacing a CRT with a flat panel on the same desk though, albeit at some extra expense.