Mickey, have a read of this thread;
http://www.pprune.org/private-flying...pl-3800-a.html
It's quite an interesting way of doing it, I'd never thought of it, don't know how well it works, but it certainly looks cheap on the face of it.
steakandchips, from reading your posts, you seem to have started up quite recently. Have you actually done many PPLs using this method? How does it work out in practice with real world customers?