I see no point in owning any whisk(e)y I wouldn't open. While I recognize that a 'collectible' bottle might increase in value, there is no fundamental basis for valuing them or predicting which one will appreciate. In other words, whiskies aren't fungible.
I do have, and have had, rare and expensive bottles -- but they are already opened/consumed, or I have plans (both definite and/or indefinite) to open them. Once open, of course, they are worthless -- except as whisk(e)y.

