I don't like Amazon as a company. I don't like the way they deal with vendors. I really don't like the way they deal with their own employees, down to the recent non-complete agreements for warehouse laborers! As a consumer, I love Amazon, though I do try to not support them.
Why do I want this button?
We keep paper towels and toilet paper in the garage. When we're getting down to one (or no!) rolls left, either I or my wife will say "Oh, we only have one more roll of paper tolls left--let's make sure to get more next time we go to the store." Of course, sometimes that doesn't happen. Sometimes we forget to add paper towels to the list. Sometimes our beloved family cat will decide to spray rancid piss down the hallway, and we exceed our EPTU (estimated paper towel usage). If we had a button in the garage next to our paper towels, and every time we were getting remotely low we just tapped a button and didn't think about it again...that's brilliant.
I would normally never buy this kind of product from Amazon as the local store prices are _always_ better (especially if you keep an eye out for coupons, sales, etc--but even without that). The button might change my mind.
This is seriously one of those ideas that's so simple and yet so brilliant at the same time.