Molds are very expensive and molding machine time is pretty spendy too. If somebody here wants to have an onshore comany build them a mold and make the parts, let me know.
After the parts are made, all you have to do is sell them, and make a profit. Or at least break even. Part cost comes down to economy of scale. One part would cost thousands, hundreds of thousand of parts would cost pennies each.
If more people paid attention to the origin of the products they buy, avoid the ones from offshore and buy only Made in USA, the money would stay here. But we have a global economy and some things are unfair. Oh well!! There is not enough room in this forum for staying on this subject. Remember, buy U.S. and sell overseas.