A friend asked me for an Amazon wish list, so I went through the saved stuff in my cart and put a list together. When I checked it the next day to make sure that what I had put in there was reasonable, I noticed that one of the items was significantly cheaper than it had been before. I went to the page for the item… but it was a different seller, and one who was offering free shipping which the other one was not… and I'm 100% sure about this, because I still had the original item in my cart.
Is this some sort of fluke, or is this normal on Amazon? This could be a useful way to save money, if there is a way to make this happen consistently.