Let me start saying that I fell in love as soon as I discover Upverter, I believe this is going to be the future of PCB design, for professionals and hobbyist alike.
I can't stop comparing Upverter with Github since they are similar in many aspects, one for hardware the other one for software, but they share common principals, and of course, Upverter is a way more complex app.
99$ a month for a small startup, a single professional or a electronics enthusiast can be a lot a money, and yes I know there is a free plan, but if you want to keep private 1 or 2 designs you don't have any options but to pay 99$ a month, and I fear many people feel discourage about it. I am pretty sure that if Upverter has a 20$ plan (like Github), with a maximum of 10 private projects (or less) and maybe no live collaboration, there will be a lot of people happily paying, I will pay 20$/month for just one private project and unlimited public ones and I will be happy knowing that I'm supporting this amazing company with a monthly amount I can afford.
What do you think?