A good trading strategy is important, but what traders need to succeed is not an absolute strategy that gives 100% winning. A 60% winning strategy is okay if you can work on your trading psychology and money/risk management. As simple as the two are, they've reshaped my trading results for good.
People buy course for that amount because they think that the people selling the course will actually put their real strategy in the course forgetting that most people would not give your their secret but will keep giving you hope that if you follow their guidance that you will become successful as them but in reality, they either do not have any strategy to sell or what they will be telling you is something that you already know. People are just hopeless and if you check out those buying this course, alot of them, this is not the first course that they have bought on trading. Most traders do not have a good trading strategy but what they are doing is just copying strategy that they think are the best but they are not. Alot of people are getting deceived regularly because of this trading strategy.