All said the price of the product decided everything

As the saying goes, I think this sentence is one hundred percent right every now and then, but I still agree with this point of view, and sometimes we will meet the higher price of the product.
When our products have quality assurance and after-sales guarantee, we have to take into account the cost of our investment. Since we want to guarantee the quality of the products, we should use high quality when we use the raw materials, then the cost of our products will go up, and we are the same as our customers. The problem we need to maintain and repair the time is also required costs, a variety of costs together with the cost of a natural high, so the price of our products will also be improved a few. Conversely, if cheap equipment should consider whether his two services are in place? The question is worth thinking