Pete,
Collectible buying groups much like Art Buying groups have been discussed on here recently.
Here are some active groups:
https://collectable.com/
https://rallyrd.com/
You really should read this article on Bloomberg:
https://www.bloomberg.com/news/artic...but-should-you
Another good read from the "Atlantic" :
https://theathletic.com/2056025/2020...-with-just-25/
"These" groups exist in force and probably have a lot less experience and knowledge than we do! Just a ton more in disposable income!
Peace, Mike