Hello,
I have several questions?
The maximum supply amount of bitcoins in circulation is 21 Millions.
The amount that are mined so far is more than 16 Millions (more than 79%)
What is going to happen when the 21 Million limit is close to be reached?
Since it going to be more and more difficult to mine bitcoins, does that mean that the price of a transaction is going to be extremely expensive?

Thanks for taking the time to answer :-D