...yeah but imagine you're trying to hire a contractor to do some job. Of course you're going to ask, "how much does it cost?" Generally you will shop this job around to get an idea of the range of prices for similar work from qualified contractors and then make an informed decision. If you go at it the opposite, "I'm willing to pay X for this job Y" then you've skewed your capability to make an informed decision unless you already have an accurate basis for what the job should cost.
In the employment world, folks use Radford and similar as guidance which of course can steer them of course from where the local talent market actually is.
