Yes, but at $19.99 it's pretty expensive. I don't know what the right price point for something like this but, given the fact they are easily lost, definitely < $5, more like $1.
HW people on HN, is this impossible at scale?
HW people on HN, is this impossible at scale?
Was the original/intended purpose to always sell them at cost and make the profits up through increased sales?
I think in Amazon's case it was just experimentation with a sunk cost. Based on the discussion above it looks like it's impossible to form a company to sell these to turn a profit, at least in the dash button form.
negative profit when you count assembly.