Retail sale is universally participated in. It is also the terminal ending point of the entire economic/productive process where production exits the economy and becomes consumption. Hence it is the terminal summing point of all costs, price, including profit for every item or service, and also the terminal expression point for any and all economic factors, like for instance inflation.

Put all of these facts together and the monetary policy of a 50% Discount to the consumer at retail sale all of which is Rebated back to the merchant granting it to the consumer by a monetary authority mandated to do so doesn’t even need all of the complex calculus that normally is necessary to define and discern such macro-economic effect. In other words the macro-economic effect is accomplished by the point in space and time of the policy itself.