And this is not the whole story , how much they invested to research labs , scientists , their own lens softwares and algorithms , glass research , doctoral theses , how many years they paid top prices to the best minds of the World , how much invested to the best cnc machines and how many years they less use them because of cnc machine out of tolerance aging. 7000 dollar is much but when you are paying 60000 to Toyota , it is very cheap.