Yes, that's the standard. Don't get hung up on thinking it's some way to cheat you. That's the same way I get paid.
Think of each load as a contract between you and the company. They let you know how many miles are paid on the load. They don't pay you based on how many miles you drive, but how many they are charging the customer for.
This is known as HHG miles. Household goods miles have long been the industry standard. That is what you'll find in the mileage charts in the back of your Rand McNally atlas.
Ah thanks I was currious, thanks.