Rick, could you please talk to those parents? ;-)
Jokes aside, my dear young Sir, you have to realize that $99 is nothing compared to all the benefits you can get from it - you can actually make a living by doing business card / logo design for your clients, etc, etc - all in PDN. Every time Rick improves it, you automatically get better productivity for yourself. What are you going to do if Rick can no longer afford to work on it for free - what's the benefit? Is keeping those $99 going to change your life in any significant way?
You are still young, but you'll eventually learn that great talent, great ideas, and great work are hard to come by, and every time you do, you should rejoice. So, tell that fairly large group of people to do some house chores or get a temp job at the fast food restaurant and earn $99 for PDN.