I don’t succeed to find how much coast the Premium version and as is made in order to acquire it Who helps me?

Premium costs $2.00 per month. You can make a prepaid purchase of up to 12 months here, or set up a recurring subscription here.

Wonder how many premium users there are right now. Are there public numbers?

There aren’t any public numbers, but it’s currently enough for WP to be self-sustaining…coming up on us being able to do some cool stuff.