It seems he is already moving on by entering the self help/motivational speaker industry.

> As his business is increasingly run by his team, Grant has reduced his salary down to $60,000 a year and now dedicates much of his time to getting that message out. He consults and teaches e-commerce classes through the same blog he has been using to track his performance.

In other words, his business isn't working out very well and he has a lot of inventory risk. So he's "pivoting" to self-help.

It may have been working fine, and he simply chose to pivot careers rather than scale what he had.

Back in the 80's, it was practical to buy software packages in the US and resell them in Europe at a substantial markup. After a while, more and more businessmen started doing this until the price differential disappeared. Classic arbitrage.

My father did this. Also he imported stuff from Taiwan and crudely ported the software for European market for a 200% markup. Literally unpack, throw a floppy disk in it, pack, sell.

Retail arbitrage is already very popular on Amazon. It might not have much of a future though with Amazon heading towards not accepting those invoices when reviewing an account.

I think the opportunity is probably too small and time consuming for big business to come in and destroy the opportunity. Similar to how small eBay sellers are able to import stuff straight off alibaba and make a profit.