Someone like Casio could just sell it for 500$ and collect their future cashflows right away. However, the customer turnout might be significantly less than 55$ they are selling it for.
So the only way to sell it for profit is to keep the data and make a subscription (which may or may not exist yet for Casio).
I also disagree my email address and step data is worth $450 to them.
Let’s be honest. This thing is not innovative. It’s going to be using cheap commodity chips. Its selling point is nostalgia. I find it hard to believe it’s not already profitable at $55.