Perhaps theory of prices has a totally different meaning from "leftist" contexts? They operate under imperatives and assume there is some sort of ideal formulae

Perhaps theory of prices has a totally different meaning from "leftist" contexts? They operate under imperatives and assume there is some sort of ideal formulae that ignores that it makes the Knapsack Problem look log(n). "What the market will bear." is a nonanswer to them even though it is accurate because reality is messy with human psychology more so. Of course from mainstream economics perspective their concepts of value and exploitation are between fallacious (universal global value because labor is assumed as the basis) to pants-on-head levels of crazy (the idea that a fair trasaction becomes unfair when the buyer is able to reap later profit).