After a bit of searching around and looking for what I wanted, I decided to go with the Beemer shop in the US.
I ordered the following including shipping to Europe:
|1 x ||Grips, Replaces Heated Grip Rubbber Only, Set ||$19.42|
To replace my worn old 1200GS grips. Now I'm just waiting for the order to be delivered as there was a backlog... Will post more when they arrive.
You can see the preview of them here.
I plan to follow the instructions here