I spent 2 years watching ebay for Leading Edge 2014 keyboards, one of the few "sure thing" blue Alps donors, and they were very rare. Months would go by between appearances, and when I finally got a couple of them, they were nasty, worn, and yellow.
In recent weeks and months, not only have a surprising number of them suddenly turned up, but they are in beautiful condition as well!
Obviously, these are sour grapes and I am jelly. Good luck to you!