Pricing here has been taken as an isolated entity. Nothing in this world is absolute, everything is relative.
Basic law of Microeconomics is pricing elasticity, following demand and henceforth supply.
Also, in today's make believe world of Startup, no one bothers about your profitability, so pricing is a non-concern really.
One should flow with the wind and currently, the wind is flowing towards Userville.
So adapt the pricing which would get the maximum users.
Start with low and then should you be forced to increase, increase it.
The best is Freemium, let the user be in control.
When you cease control, you win !