I agree with most of this, but not perfect knowledge. That is impossible.
Because perfect knowledge cannot exist the market will never be perfectly free, however a high degree of knowledge equals a high degree of freedom in the market, and the same in reverse
Prices fluctuate in a market partly because facts are not equally known, and partly because two people with the same knowledge make different judgments from the same set of facts. Prices also change when the facts change. Markets adjust to change much faster than governments. The purpose of a market is to discover the equilibrium price where supply and demand meet.
Economist look at this in two parts, the part you described which is the free market trade, and the “friction” which is the non free market part like impaired knowledge, government regulation, or natural barriers to enter (as cost or skill)
As for the car dealer, he does not have to disclose his costs. To have a valid contract with his customer he has to disclose his price, terms, and what work will be performed. To have a valid contract with his employee he needs to establish work rules and compensation. Then he needs the consent of the other party. If the parties cannot agree there is no contract and we don’t know the correct price.
Ah, but is he seeking a contract based on hidden knowledge or a free market contract in which knowledge is already provided? In a free market he cannot have hidden knowledge so does he hide knowledge by inflating shop or labor cost? or does he list an expected risk cost?
here is an example Shop A) I’ll put starter on that car for $150, Shop B) For a factory starter it is $210, for a new after market brand $160, or if you’ll take a rebuilt starter it is $110. Is shop A better on price of an after market brand or higher for a rebuilt? Now if we find A is pricing an after market brand and we ask Shop B to match by dropping $10 in price, he may well say " No, I gave you my prices and you are free to shop around" Which in economist speak is to say he thinks the risk premium is correct at $160, and the risk premium is to low at $150. Yet more important to me is Shop B supports free market principles!
The wages are just if they are set by the free consent of both contracting parties. If you were to hire me to sew clothes by hand, my labor would only be worth a few cents per hour. I don’t know how to sew, and the results would be very difficult to sell.
This is the hardest issue for most students. IS IT YOUR BEST OPTION? Thus if you have good knowledge and it is your best option do it. If you have better options do not do it. And wow to the man who tricks you or withholds knowledge to get you to do this work
If I became skilled at sewing, or one of us invested in technology to make me more productive, my labor would be more valuable. If I learned to design clothes, improve the manufacturing process, or manage the work of myself and others, I would be even more valuable to you. If I took the risk to start my own business, **I would have both greater potential **and the possibility of loss.
Again it is based on knowledge, only if you have knowledge of the market and gain knowledge of the skill is this possible.
If we cannot agree on the terms of employment I will not work for you and I may be your biggest competitor some day. I could also decide to pursue a line of work that I am better qualified for. Do you think I could pitch for the Chicago Cubs at age 60? I would gladly settle for the MLB minimum salary, and they probably won’t win the World Series this year with or without me.
Isn’t it good you know what a major league minimum wage is? Imagine a major leaguer who thinks if I leave baseball my earnings may drop by 50%( eer, that is 90%) btw- you cannot pitch in the majors because of a
natural barrier ie the ability to throw better than 99.999% of other people
hope that helps