You're misunderstanding: 17000 is the marginal value of a search engine. 10k is not the marginal value if cancer. If you find the marginal value, then you shoul

You're misunderstanding: 17000 is the marginal value of a search engine. 10k is not the marginal value if cancer. If you find the marginal value, then you should be willing to pay that price (but no more) to trade for the thing. People are willing to pay hundreds of thousands of dollars for cancer treatment, so 10k clearly isn't the marginal value.