Almost everything we buy works this way. Every good you purchase is marked up in price from what the seller paid for it. The true value you receive is always

Almost everything we buy works this way. Every good you purchase is marked up in price from what the seller paid for it. The true value you receive is always less than what the seller receives. So trading money for goods or services you nearly always receive less value in exchange. It's just more apparent when we take away goods and services and just show exchanging money.