Amazon gives non-Prime members free shipping at $35 or more of eligible items. Instead of simply letting users get the product with free shipping, they’ve added a discount that prices it exactly one cent below the $35 limit, while only subsidizing the price with $3.38, which is about half of what they’ll then charge you for shipping.
The only things I can think of is credit card charge backs or harassing support services, but if they were doing that, it’s not like they would admit it on Lemmy 😂