A Russell is made to the height and weight of the purchaser.
Resales of a Russsell to a person of different dimensions will not provide the best riding fit.
I have a friend who has heard me brag on Russell seats for years (the best out there). He ends up getting one from a man who is 5'6" and my friend is about 6'4" and 90 pounds heavier. He doesn't like the Russell and now says Russell seats are junk. LOL