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.
I wanted to order something, but half a year of waiting seemed like a bit long. Refunded, got money back and ordered again. I still have half a year to wait, but I have mine money too. profit?