It is for orders above 35 dollar and only available on certain items? How is this a shot back? Does Amazon have a money printing side business that allows the

It is for orders above 35 dollar and only available on certain items? How is this a shot back? Does Amazon have a money printing side business that allows them to subsidize/ keep prices near 0? Until then, this is the equivalent of pissing in the wind. If I was an investor, this looks like WMT opex just increased big time.