By Kirk Miller Premier Whisky, a whisky investment and production company in Hong Kong, recently announced the final pre-order for the last 50 bottles of a 72-year old Glen Grant single malt, crafted in conjunction with the whisky creators Gordon & MacPhail. Grabbing one of these bottles will set you back just under $54,000. It’s not only one of the oldest whiskies ever put up for sale, but it’s also the highest-rated, according to one prominent whisky critic. With these extreme-aged whiskies, you have to sometimes wonder less if they’re a sound investment — they probably are — and worry more …