Recently, I was asked to supply four, yes four, bolts for a  prospective customer.  Now, true, they were LARGE bolts.  Three quarter  by nine inches long with a nut and a washer but still…..four.  Because  it was a prospect that was sent to me by a friend and they also had the  potential of being a future customer more in line with type that we have  serviced for over 25 years, bulk buyers, I quoted.  No surprise I  didn’t get the order because they didn’t realize the cost of only buying  four bolts at a time but, there is a reason why those who buy in bulk  receive such great discounts.
Bulk.  If buying in bulk wasn’t an industry unto itself, there would  be no reason for the Walmart’s, Costco’s and Sam Clubs.   Problem is,  the Walmart’s, Costco’s and Sam Clubs have been around so long that  there are a lot of people who don’t remember when they didn’t exist.   They don’t know that when this Big Box type of storefront came along,  those that started to patronize them were willing to sacrifice service  and sometimes quality, which up til then was the best thing that a  company/store could offer it’s customers, for price.  But at that time,  people knew what they were getting and what they were giving up.  They  knew that to get lower prices they were going to have to look for items  themselves and otherwise sacrifice service that the company/store would  normally pay product knowledgeable employees who would assist them with  their purchases and make their shopping experience much more enjoyable.   For a short period of time, consumers had a choice.  Service or price.
Now, twenty years later, those days are hazy. The concept that  companies would save on expenses by employing fewer people and allowing  the consumers would do the labor that otherwise long term employees  would do for them in order to pass the savings on to customers is long  forgotten.  Younger customers don’t understand why they cant get the  same 10% above cost discounts that Big Box offer and still get the  quality service that higher priced products provide.  That there are  business costs involved in hiring and training employees and sales  personnel and unfortunately, those costs always are passed down to the  consumer if the company is to remain solvent and healthy.

Needlepoint Zip Screws
When I first started in the fastener industry in the early 80?s, selling 
self tapping zip screws and 
tek screws, there were three very clear layers of distribution.  
Importers, who brought the product from overseas who sold to 
Distributors who repacked the product into 200 pound kegs or 50 pound cases and sold to Contractors and 
Hardware Stores  who sold 4 bolts.  In order to sell four bolts, they have to pass  through three shipping departments (including freight charges) and  billing departments in order to get to the consumer. But when you buy in  bulk, 50 pound cases or more, those shipping and billing costs are  distributed and shared throughout maybe 20,000 screws and not just 4.
There is a good reason why four bolts are so expensive.
There is a value in buying in bulk.