Would you buy a blade at .1 btc?
They will continue to reduce prices to compete with newer tech, that's the way it works. And people will continue to buy AM product as long as they keep prices competitive.
Selling itself is irrelevant.
What matters is how much
total profit you get.
And if they sold blades with a mere .1 markup (assuming your .15 cost, .25 price), I doubt we would get nice dividends.