However, I would argue most of things are cheap, even today. Their very low price in the last decade(s) was maybe an anomaly due to huge income inequalities in the world, global commerce expansion due to a very peaceful era, and very abundant energy. The price of things is still quite low, if yo try to imagine what it would cost to a small or even a large community to build most of the things we use, we would have to go back to the 1800's.
Writing this comment reminds me that things could get more expensive, and making them cheaper takes a huge amount of human effort.