[yourapostasy]

> ...so there's an underground market for shipping baby formula from other countries to China at extortionate prices.

I have long suspected years ago that in the US mysterious, sporadic local news reports of a Wal-Mart, CVS, Target, or similar store getting wiped out of all baby formula or all of a certain brand/SKU were simply rings of people scooping it up for this arbitrage over eBay, similar resale/auction sites or even WeChat. It doesn't seem systematic, and was very arbitrary which towns/cities they hit and when, but I've always wondered what the real story was.