wow, you REALLY covered EArthship on this post.,. nicely done!! and some great photos also!
the app for $10 is a new thing.. its based on a new design called the encounter model, vs the larger and more expensive global model..
Interestingly, i never did a workshop, and didnt even have youtube when i started my build.. and i succeeded! as mike says, you CAN build it yourself!
I hope to be part of your build when it happens!