Most promotional products are priced according to quantity: The more you buy, the less you pay per item. The reason for this is simple. Much of the cost of imprinted items comes from the labor involved in the process. It takes time to set up the machine that will transfer your logo onto the product, whether you're printing 100 pens or 100,000. When you can spread that upfront labor cost over more items, the per-item price goes down.