At the risk of thread-jacking... Nearly $20 for recipes for a rub and a sauce seems kinda out there to me...and I'm thinking the point here was that the same recipes are already available somewhere! I understand the money goes towards helping run the site so why not offer memberships to the site and include the recipes "for free"?
Anyway, I too was concerned about using 1 rub all of the time, but only because I thought I might be missing out on some other good ones! So I've got 6 on the shelf now that I rotate through, to try and to support the folks making them (who have helped teach me the ways of great Q!). When they are gone I'll probably pick 1 or 2 to stick with...unless I find another one where I can also get a cool t-shirt!!!