28-year-old makes millions buying from Walmart, selling on Amazon
I am surprised that there is so much margin. Is this because:1. Amazon product delivery is so convenient that users don't mind paying little extra or2. Walmart discounts products valuing their warehouse space more. Thus not realizing there was demand for the product elsewhere or at a different time.Seems like it would be simple for Walmart to figure out this arbitrage and shelve products for longer time. Any thoughts ?