My last renter tried to live entirely off Amazon. The truck was in here almost every day. (Well, it comes for me every day too, but bringing samples and material for my business.) Mostly, he ate various kinds of nasty-looking processed foods that came in case lots. But hey, they said stupid shit like "organic" or "natural" on the label.
He was also always watching various apps that track the prices of various stuff on Amazon, in which he was interested. Whenever something got to a price he liked, he'd buy several of them, then try to sell them locally on Craigslist, for the regular price. Stuff like sports toys. Or he'd try to rent them to summer people, then sell them at the end of the summer.
Personally, I can't remember the last thing I bought on Damazon. Except a few Kindle books.