Vienna said:
It's sort of like that saying "you get what you pay for" well in most cases.
I respectfully disagree,
You pay what the market forces dictate. For most products, the supply and demand curve cross at a price point, any pricing significantly above or below where those curves cross is inefficient. An SP that puts a little thought into her pricing, and experiments a little, will learn where she can price her sessions to maximize revenue (if they want to do it - maximize their revenue that is.)
Those who think, "I'm different or better and my service is worth much more" than that efficient pricing point may be correct - they may actually have a far superior product (but in my experience pooning, there are not as many who qualify for that as those who think they qualify for that.) It is more likely that they price themselves at an inefficient point and miss out on maximizing their revenue.
And don't think that just the customers demand dictate pricing points. Note in the first paragraph it is dictated by where the supply (SP) and demand (client) curves cross. Standard pricing is dictated much more by the number of SP's and the number of clients willing to pay x, moreso than the percieved quality of the product by either party.
There are obviously slightly different cuves for PSE, GFE, non-GFE, etc., as well as different curves for HJ, BJ, FS, etc. Note that these are different pricing curves for different products, not as much quality driven.
Of course, this is based on "free-market" economics and collusion by either side would kind of screw up the theory, and no theory in economics is perfect - just more of a guideline.
Sorry for rambling, but I couldn't resist.