Re: @Dwarf
So much to take apart. Let's get to it:
Original: "You have to take into account asymmetric information"
Reply: "So you dont research what you are going to buy?"
Asymmetric information: noun. A situation where information is not available to both sides of a theoretical transaction. If asymmetric information is part of the experience, then research will not result in the desired information. An example: I do not know when buying a phone whether and for how long its manufacturer plans to release updates for it. The manufacturer does, but I don't. I have to guess based on reputation, previous history, etc. This is unreliable at best. It can often be worse.
Original: "where I do not know that the piece of equipment is difficult to repair"
Reply part 1: "That kind of equipment or specific product?"
Specific product, obviously. For each option. From context, this is what the complaint is about.
Reply part 2: "Did you look or was it not so important to you at the time of purchase?"
See above, under the section entitled "asymmetric information".
Original: "cartel/oligopoly behaviour"
Reply part 1: "Which gets punished."
You have more faith than I do.
Reply part 2: "But not what we are talking about unless you think so many businesses are running such?"
I would like to argue against this, but the first reply has already taken this and done an admirable job.
Original: "Please stop with your A-level economics"
Reply: "Didnt take it but thanks. Should we abandon any economic thought in this discussion or just if our opinion doesnt match yours?"
I'm not sure if you're misunderstanding that point deliberately or because of a regional term. I'll assume the best. If you're unaware, A-levels are the tests taken in the UK by adolescents and cover the basics of a topic. Therefore, to accuse someone of using "A-level economics" means that you are accusing them of having only an elemental understanding of a complex topic and displaying ignorance. The solution to that is not "abandon[ing] any economic thought" but instead to consider more complex parts of economics, among which are the incorrectness of the perfectly competitive free market.