>The cost of items is based on what you will pay...not what it cost to make.
So... Where's my 200 dollar car that costs 4000 to make?
Oh wait, did you mean
>The profit margin of an item is what value the customer is willing to pay over and on top of the cost of initial production + logistics of getting product to the final resales?
Because if you don't take that in to account, you only played enough attention to validate a worldview in which capitalism justifies unbounded exploitation.
Capitalism operates within specific bounds outside of which the axioms on which it is based cease to produce net positive effects for the health of the societal framework in which it operates based on it's tendency to inequitably partition the fundamental means of exchange without active measures in place in order to ensure that the majority of capital continues exchanging hands instead of languishing in accounts chasing after opportunities for growth rendered nigh-impossible to find once a "winner" is established by conservative investment strategies in most industrial verticals, and that winner optimized beyond the reach of meaningful competition by new entrants.
You'll then end up in repetitive cycles of boom and bust as too much capital chases too few opportunities for growth; all the while with the financial industry converging toward whatever form is most able to avoid current regulatory controls.