So - if he is still using the Avalon Eidolon Diamonds then he has had those for a very long time. But - at that price (over 30K I think) - hopefully you wouldn't get the urge to swap them out in a year or two.
That Rick Beato interview is quite good by the way - Jarrett actually plays a few things with just his right hand (after his strokes, he no longer has the use of his left hand).