Southern, I have some thoughts on that last elaboration. I don’t think value is subjective while prices are objective. It’s the other way around. The value of possessions can be measured pretty objectively. Usually we can say that this item is good for you while this one is bad. But prices are marginal. You are willing to pay less for the fifth milkshake than for the first. Prices are not an objective measure, they intermediate a trade-off between options at a particular moment. Two items with the same price are not worth the same. One might be a house, while the other might be a bottle of water in the desert. The goods that changed hands are not worth the same because those who traded them happened to agree on the same number.