Just go to a commercial copy shop. The good ones will have a decent laserjet printer that allows for odd sized or special paper. Mind you, chances are they will make a mistake the first few times because this is not something they will do often. So bring extra paper and be clear in your instructions. I always tell them to print in color, no scaling whatsoever (very important) and which side to print on. You'll probably have to supply the design in a PDF format as well. Luckily if they print the wrong side no damage is done. If the paper gets stuck however, well, game over man!
I'm blessed in that the university where I work has a good copy shop around the corner where I can go with a good printer which so far hasn't chewed up any of my paper. By now I've been there so often, even though they have a lot of different staff, they all seem to know and understand what I want.