A lot of businesses
and stores will offer discount
pricing on items, especially if you order large amounts at the same time. Also, clients
with potentially large orders in the future
often get special discounts.
You can take advantage of this too, if you want. If you can convince a manager that you are interested in evaluating a product, and that you are part of a purchasing / evaluation group for a company, you'll often get things for free or for very low prices.