Wholesalers are often criticized for increasing prices. This is because they buy products in bulk from producers at a lower price and then sell them to retailers at a higher price. This margin allows them to make a profit, but it also increases the cost of the product for the end consumer. However, it is worth noting that wholesalers also play an important role in the supply chain by helping to break the bulk and finance producers. They may also provide after-sales services, such as repairs or returns.