E-tolls - what do they mean to the rest of us?

So, the GP's seem to have it all figured out, but there's a bunch of conflicting reports and general confusion relating to what e-tolling will do to people who aren't from Gauteng and don't travel through the area often. Seems like nobody really knows what'll happen.

Can anyone clarify as to how e-tolls will affect people in other provinces? What is the tariff differences etc.

Not that it bugs me - if I am ever punished and have to go through Gauteng it'll be gravel all the way through, I'm just interested to find out about the details.