it's always depressing when people correlate cost of production with sale value of a product, the price of a product is set via market research, basically what the company thinks they can get away with, if market research says that they can sell it for 800 then that's the set price, irrelevant if whether it cost 300 or 700 to make, if they cant make a decent profit, the product gets canned
the difference between production in China and USA is called the profit margin, the reason that products are made in China and not the USA is not because it would make the product more expensive, it so the company can make more profit, it is simply greed