Tinstaafl

Economists state there is no such thing as free lunch i.e. Tinstaafl applies capital budgeting analysis frequently to existing asset classes for investment to get the price.

It means the cost of passing the best alternative to the next like installing a new manufacturing plant in the building that the firm owns will come at a certain cost, even in conditions, when the building is available at zero cost.

The total value of the project should not be more than the cash flow estimation made for it. 
Free lunch was common in the US and Britain in the mid-19th century where it did not mean free food for the poor and hungry.

It was used by American Saloon keepers to attract drinkers who were given free lunches at saloons. The saloon customers often ended up paying more or cash for the food they were obliged to eat than the price of drinks. 

The leading journalist Paul Mallon wrote in the newspaper that there was nothing like free lunch until man developed the power of creation because there will always be somebody who will have to pay for it. 

The theory has been used since to depict that the universe was a closed system of capital alternative investments where resources will exhaust someday.

It is used to indicate health costs in the same way as “ no pain, no gain.” It is used to indicate riskier investments, where the buyer opts for such options with a higher chance of losing with the hope that it will get higher gains.