Something else to consider if you don't want to eat up the ink, would be to have your map printed at Staples or Office Depot...some people may wrinkle their nose at printing like that like as it pertains to copyright violation, but if you're printing it at home, then to hell with it.
However, that being said, a lot of times you can get things printed there for pretty cheap (assuming you don't want to burn through ink at home)...plus, you can get it printed on larger paper, and laminated.
Just something to consider at least
