Service charge flat rate fee 0.0002 BTC for each sale.
I like a lot of things about your paywall but not a fan of having fixed fees and your current minimum of 0.0005
BTC [I know it's not much but it limits smaller sales].
0.0002 BTC this fee include forwarding transaction miners fee, bitcoin transaction is not free
How much you're going to charge for hosting files beyond those periods?
At this moment no any fee, we are currently collecting statistics on the use of this service. In the future, the cost of hosting a 1 GB file will be about $ 5 per year.