A wholesale supplier can influence pricing long before a product reaches an Amazon customer. When comparing Amazon Wholesale Suppliers, sellers should understand how unit costs change with different order quantities and then calculate whether those costs leave sufficient room for selling expenses. Amazon recommends considering initial purchase costs, selling costs, and additional expenses when setting prices. This means a supplier's advertised wholesale price should be viewed as one component of the pricing calculation rather than the final answer. Sellers can compare different purchasing quantities and suppliers to determine which arrangement creates a workable margin. This approach helps prevent products from being selected simply because they appear inexpensive at wholesale.