I was compelled to respond, because you are right, there IS, 2 kinds of puzzle collectors, those who just collect the puzzles that are mint condition i.e (original box, with unbroken seals, etc.) and those of us who buy them to play with and try and solve them,(...isn`t that the fun part ! )
I guess I am sort of a Dr. Jeckyl & M. Hyde, because, I do both
I had receive the original Rubik's 3 x 3 x 3 made in Hungary by Ideal (transparent cylindrical case)
as a 1980 Xmas gift, and only seconds after opening the container, well, my father mixed it up real good
......anyway, I now always buy two puzzles, I keep one unopened, and the other one I play with.
And like everyone who "follows-the-cube-puzzles-offered-on-ebay" once in a while you wonder why someone will pay SO MUCH for a puzzle that is not extremely rare, and then again, we all have are own stories of winning a cherished puzzle for peanuts ! (in my case I finally found that 1980 Cube like the one I had received in 1980, mint condition, unopened seal for 9.99 GBP. (No, my father won't be allowed near it !!
And by the way: Who hasn't said to himself at least one in his life:
..."I wish I had kept the original box & instructions !!
Personally, I think that the packaging IS a part of the puzzle.