In the end, it’s all about what you sell. The ‘right’ product and the customer demand for the same can help you decide pricing, promotions and profits. But finding out the ‘right’ product is a challenge. The dynamics of market and customer demand need to be considered in addition to finding out when will this product be in-demand, when it will go out of fashion, what is the new ‘right’ product to sell. There are too many things that you need to factor in to make that one product a part of your inventory.