Should be affordable to all...
Very expensive. Not everyone lives in US or Europe. You should reduce the price for Asian countries like India and China. India has a population of 1.3 bn and 450 mn active internet users and growing.
I am from India. You are already offering 50% discounts still its very expensive i can happily pay $20 for one year subscription for three simultaneously users one mobile phone, tablet and a PC.
Kindly seriously consider my suggestion. $1 is not equal to other currencies. Google and some developers have understood it and some apps that were sold for 99 cents are now sold 1/6 of that price.
If you really want privacy for everyone then consider price according to geography.