The production cost of a Qualcomm Snapdragon 870 processor is $90 in early 2021, and the price drops to $65 in later years.
The reason is that as the production of the same type of processor increases, so does the price. This is called dilution.
In fact, each chip shares the cost of research and development, and the more the quantity of production, the cheaper is the law of true incense. This applies to any chip!