Harry Lauder's Walking stick is quite hard to root. It can be done by soil or air layering. As such, it is often grafted. The base plant in most cases is the terribly suckering Turkish hazel which is straight and suckers profusely.
Trying to do a normal cutting and getting it to root is near impossible. I have tried and failed several times.
The price above for 2 own root plants is very reasonable - I have NO experience with the seller.
I have 2 own root plants I picked up on sale at HD for 15 $ each - normal price was 50 $.