That is an interesting product indeed, thanks for the link. They also have some other interesting items and their prices are very good too. For $15.99 I couldn't resist your link above, one is already on the way! I'll have to figure up costs on a recent PCB and it's components, they might be selling theirs at close to what it costs me to make one here. Of course I never planned to sell anything, it's strictly a hobby and learning project, and quite enjoyable too.
I had planned to post the final results of all the projects here for others to use, but linking to this site might be a better option and much less work. I'll still post the results for those that like to tinker, but the linked board is really a deal, IMO. And I'll be revisiting their site for further study on some of the other items they have.