Time and value

Labor produces value. Mechanical tools and production tools only transfer value. Why are mobile phones, TVs, etc. getting cheaper and cheaper, and manual work such as repairs becoming more and more expensive? The more advanced the production tools, the less general labor time is contained in a single product, such as the production of a watch that used to take a week, and now it can produce 100 watches a day, and the labor time consumed by each watch is drastically reduced, and the value of the product is reduced (so an inch of time is an inch of gold). The tools required for repair and other work are more and more advanced, which leads to high costs; the deeper and wider the expertise involved, the higher the threshold leads to a corresponding increase in costs. In the current era of mass production of various products, professionals spend time only to repair one thing, which is a great waste of resources, which has caused a situation that it is better to repair than to buy, such as buying an air conditioner in Europe for only two thousand euros, but the installation fee is seven or eight thousand euros.