Balls coming from the USA at retail of $1 each are most definitely NOT made in the USA I can guarantee that. Even in massive quantities there is no way that I can buy them anywhere near that price from the USA (I tried).
I have seen boxes of balls supplied by a well known USA pinball parts seller that very clearly have a "Made in China" sticker glued to each box (when sold retail in Australia the seller won't show you the box they come in). I also have a pack of "high end" specialty balls right here on my desk that cost about $9 a ball!! The package clearly states "Made in China".
People are deluding themselves if they think Pinball balls are made in the USA. They simply are not.
Anyway.............
Here are 12 boxes of Homepin Premium balls with 336 balls per box = 4032 Premium balls ready to ship out.
As an interesting point, they weigh 80 grams each so that trolley has 1/3 of a tonne on it!!!
