If transactions are free than how do you earn money without earing how the other works will be run? Please clear one thing, "Most transaction are free" what does it mean?
A user gets free daily bandwidth points of 500. One transaction will consume 386 points. So basically if you don't do more than a transaction per day it is free. For users to make more transactions per day, they can stake STB for band points and respectively transact for free. Only smart contracts will consume UCR, which comes up with a small fee.