There are great benefits for those buying items in large quantities. Price being one of them. Wholesale refers to the act of buying or ordering items in huge quantities at what’s called the wholesale price and then reselling these items at a higher cost to get the benefit.
For example…
Supermarkets buying milk from milk farmers. Since supermarkets require huge quantities of milk to satisfy customer need, they order milk bottles and carton in bulk. Because they order such huge quantities, farmers often give them a discounted price known as a wholesale price.