Part 6 was about supply, interest, and government approaches. A value roof is a legitimate most extreme on the cost of a decent or administration. A case is rent control. On the off chance that the value roof is beneath the harmony value, the amount requested surpasses the amount supplied. In view of the subsequent deficiency, dealers must somehow proportion the great or administration among purchasers. A value floor is a lawful least on the cost of a decent or administration. A case is the lowest pay permitted by law. On the off chance that the value floor is over the balance value, the amount supplied surpasses the amount requested. In light of the subsequent overflow, purchasers' requests for the great or administration must be somehow proportioned among merchants. At the point when the administration requires an assessment on a decent, the harmony amount of a decent falls. That is, an expense available psychologists the measure of the business sector. An expense on a decent places a wedge between the cost paid by purchasers and the cost got by merchants. At the point when the business sector moves to the new harmony, purchasers pay more for the great and merchants get less for it. In this sense, purchasers, and merchants share the taxation rate.