This is why I think the cost of percussion caps and top hats are over priced.
209 primers and centrefire primers are half the price but during manufacture, apart from having more components than a percussion cap, they also have to be within a tight tolerance of 10th's of a thousandth of an inch or they will not go in the primer pocket, or they will fall out.
Percussion caps and top-hats must be a lot easier to produce, and the tolerances do not have to be as precise, so they should not be any dearer than centrefire primers.