I think this means that the value of services would be determined by a government inspector. As for estimating the amount of money you'll need - services basic

I think this means that the value of services would be determined by a government inspector. As for estimating the amount of money you'll need - services basically can't exist if there aren't enough customers who can afford them. Therefore there is an envelope into which they must fit. This means that you can get a rough idea of how much money you'll need by looking at the income levels of other people.