I heard about this pretty smart idea from the guy who started Red Hat Linux. It is dubbed 'Print on Demand' publishing. The idea has been around for a while and mimics a scaled up laser printer with a binder. Whenever someone orders the book, it gets printed and bound in about a minute, popped in a bag and posted to you.
It is a really cool idea when you consider how books are printed now... Thousands get printed, they hang arond on shelfs, then they get bought. That is unless the print run expires and they have to be re-run... Anyway, Lulu.com seems to work this way.