I think regular hospitals it is tough.
But things like teeth cleanings, Ingrown toenails, mole removal, x rays, Drug Costs are low hanging fruit. Other things are tough. But if you don't think the hospital has an idea of the average cost of a heart surgery etc. etc. your kidding your self. I think there are things that can have absolute prices and there are other things that it is way too tough to place a actual price on. In those cases, average prices could work.