The cross shaft belongs to CHERRY in Germany.
Alpine belongs to the non-mainstream axis, and it is used less now. If I remember correctly, this brand in Taiwan Province Province can't compare with Black Axis.
The theoretical life of mechanical keyboard is very long, tens of millions of times.
However, after a long time of use, the feel will change, and the keys will be seriously jammed. Moreover, domestic second-hand machinery is mostly YLJ, so it is of little practical significance if it is retired from the bank.
This is why the new one is much more expensive than the old one.
Cherry suggested buying original ones, although several companies made keyboards with his shaft more expensive than him.