Let me start with saying,... it's all relative. In order to answer this question logically there are way too many variables to consider. Is that a piece for a collector? How much money does a person have? , How much do they want that piece? , How many other pieces like that are out there? Depends on the situation the person is in . I believe ultimately its a collector's hobby and nothing in this hobby is worth a penny unless there is a demand for it. Asking whether this shroom is "worth the money" is almost like asking are these paintings worth the money.?
To correct you post, it's all in the name.
Newman could literally take a giant Duce then paint it and put his name on it and sell for millions.
And the same logic can be applied to corals; WWC, Jason Fox, And so forth!