Yes, they ask you if you need one at the time of purchase and if you don't ask for one you don't pay the $19 for one.
Trying to account for what the original BoM would have been with one in the box is an impossible effort and not very useful. At the end of the day all you need to do is decide if the value provided by the product matches the price the company sells it at. If not, don't buy it. For me the brick adds no extra value so I don't have to account for it.
If I needed the brick and the extra $19 pushed me over the edge to not worth it then I would consider another phone.
