"Much of our market economy operates on the assumption that when you buy/spend more you get more per unit of spending." Supply and Demand says the opposite. Th

"Much of our market economy operates on the assumption that when you buy/spend more you get more per unit of spending." Supply and Demand says the opposite. The supply curve slopes upward, meaning that a higher per-unit price is required when the aggregate supply is higher. Economies of scale apply in some situations, but people generally place way too much weight on them.