Not every comparable cost or cost changes simultaneously are cost xing, These circumstances are frequently typical market peculiarities. For instance, the cost of farming items, for example, wheat fundamentally don't vary excessively, on the grounds that such rural items have no qualities and are basically something very similar, and their cost will just change somewhat simultaneously. Assuming a catastrophic event happens, the cost of all impacted wheat will ascend simultaneously, What's more, the expansion in buyer request may likewise make the costs of items with restricted supply ascend at the equivalent me.[1]