As I said in the previous comment, it doesn't really matter, since I want to solve the problem primarily for me by minimizing the costs, so my current problem is adopting the best technology, marketing is orthogonal for the time being.
The difference in .99 and 4.99 is--non-existent, really, for the vast majority of end-users.
If it's useful enough for you to spend all your time building it, and I'm in the same position as you, it's probably worth $20/month, but it's most definitely worth $5/month.
Not trying to harp on this part of the thread, but it's the overwhelming theme of your responses for a reason.
As I said in the previous comment, it doesn't really matter, since I want to solve the problem primarily for me by minimizing the costs, so my current problem is adopting the best technology, marketing is orthogonal for the time being.