But if Amazon doesn't care, this system is not enough to convict a criminal.
I’m sure he’s only one of many. There’s nothing Amazon can do without banning such sellers.
It's sunk cost fallacy to just think "I must use this thing if I can only sell it at a loss."
While arbitraging deodorant sounds silly, I have bought EU roll-on deodorants online before because they're not much of a thing in North America. And they don't melt into a mess in a hot car.
Deodorants are hardly a thing in SE Asia, partly because of biology/genetic differences: https://www.nytimes.com/2018/02/02/business/china-consumers-...
Tax evasion may be profitable, so is shoplifting.
I do more ebay as I won't touch selling used on amazon but in the past I have bought pallets of new stuff at local auctions and sold them on amazon for significant profit. Ended up with several cases of Ember mugs once. Forget the price per mug but think I paid ~$600 and sold em for ~$2400 on amazon.