What I'm saying is pick another equally arbitrary price point and then see if you can sell copies. I think $5 will be an active deterrent to sales.
Awesome. I will make the change tonight and will offer a trial version.
If you don't believe your product is worth more than $5 then it'll be hard to convince others of it.
My suggestion is to charge at least $49 for it, at $19.99 it's still very low and you won't be able to sustain that price. You need to sell A LOT of copies to make any money :)