If you have factory sets that are unopened the cards are probably in real good shape.
But those higher numbers are exceptional examples even of what was in a package. They are mass produced so cards can be offcentered, scraped, gum stains, wax stains, bent edges/corners, printing errors, etc.
Thank you for the information. I like to think that it is something that I built while a kid and carried it over into my 20s. I have no plans to do anything with them and pass them off through inheritance to my son who values them as well.
But those higher numbers are exceptional examples even of what was in a package. They are mass produced so cards can be offcentered, scraped, gum stains, wax stains, bent edges/corners, printing errors, etc.