Office supply stores like Staples and Office Depot often have laser printers and copiers for public use. Just go in, get a copy card, make your copies, and pay when you leave based on how many copies you make. Black-and-white laser images should be really cheap.
I have an old Laserjet that I use, but it desperately needs a tuneup and I've been considering using Staples or similar instead.
Of course, you might have a problem if you're using something like Press-n-Peel and they don't want to put that through the machines. If they don't recognize it they might worry about it jamming. In that case you can try using glossy photo paper; I've used that with good results. (Actually better results than the Press-n-Peel I tried, but I suspect that stuff might have been off-brand crap).
Torben