Class action lawsuits for things I resold including Lenovo laptops and Nabi tablets. Don’t remember the numbers but it was over 1k free money each time.
Bought a bunch of Nespresso machines for cheap when they offered free $75-100 credit, redeemed the credit, and waited a few weeks for the promo to be over and resold the machine for a profit.
ShopRite had a pretty unknown and clunky site called ShopRite delivers with some incredible deals on TVs, iPads, vacuums, and other random items you wouldn’t expect from ShopRite. I resold and dropshipped items from there for years. At one point I was a tenth of all their orders. They kept changing their site to try blocking me and I kept finding new ways to evade it. Eventually they killed the good deals and I was gone.
During COVID sold 3 ply masks, 3m masks, sanitizer, gloves, gowns, coveralls, shoe covers, kids masks (custom branded) and who knows what else. That whole period was some of the weirdest times ever.