Well, like the question was phrased. If money was not an issue, then the last option is irrelevant to me, it does not matter how stupid it may seem to spend $30K on a game if I have the money.
As to whether the game is rare enough would also be irrelevant. If money is not an issue I could either buy the game for its rarity or not. So I had to go with wanting the game enough to buy it. Wanting the game out of a whim, out of collector's value, out of stupidity it doesn't matter; what matters is that I want it and I have the cash.
Ah, to be in that position... although, if I had that kind of dough, I am sure I would have more important things to worry about than a $30K game.