I'm sorry but if you did not understand what I said and pointed than you probably have no experience or knowledge of how manufacturing works. I could come up other example of BOM prices like screen and so forth. A quick example. A screen BOM cost a certain company 10 dollars. After 2nd Op assembly the price goes up 15 dollars. Factor in the shipment of screen to the manufacturer 50 cent. Now it's 15.50 before leaving manufacturing. QA (quality) personal have to spend time testing an ensure product work say 1 dollar. Cost now 16.50. The rest of manufacturing needs to make money and other logistic and overhead cost. That 10 dollar screen now cost roughly 20 dollars after leaving manufacturing. That's with no profit to the company who is requesting it. At this point they lost money on the product. They tack on 5 dollars before going to retail to make a profit. So that part now cost 25 dollars. Don't forget everyone else needs to make money in between. So now that 10 dollar part is 30 dollars.
The more complicated and electronic components involve in putting together parts in manufacturing the more it's going to cost. Bad paets that dont work. Remember each parts get tested.
I'm just tired of people using BOM price to gauge final product price. Manufacturing does not work like that. BOM is another wat looking at the base price.