Now, on the one hand, I don't buy games from gamestop that have been opened. In my opinion, they are not "new" and since that particular store charges more for new games than for used games I feel like it's at the very least disingenuous. Thus, from a brick and mortar store I'll buy a new game sealed or I won't buy a "new" game. I won't pay more for "like new" compared to its used price regardless of whether or not it has already been played.
That being said, I would never under any circumstances pay for a sealed copy to put on my shelf. I don't buy games that I don't intend to play. When I buy a game, I play it. The reason I don't buy 20 year old sealed games and open them is because of idiots who are under the impression that what they have Isn't just a game and is instead some stupid collectible meant for looking at and thus said idiots try to charge ridiculous premiums.