If you're talking price point $5 would be $0 profit by that bill of items.
Was the original/intended purpose to always sell them at cost and make the profits up through increased sales?
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.