A fridge with Russian caviar for sale, in an airport lounge. 125 grams of Beluga caviar at only 42,400 rubles, which is equivalent to roughly 670 euro or 715 USD. Perfect if you are hungry during a longer layover. Yes, this can only be in Russia.
The caviar fridge seems to be available in all, or at least nearly all, airport lounges at Moscow Sheremetyevo airport. The photos here are from the Amber lounge in terminal F. The fridge is obviously locked so you will need to contact the staff for assistance if you want to buy something.
The caviar cans vary greatly in price, from something around 5200 rubles to a hefty 85000 rubles, which would mean over 1300 euro or 1400 USD. But presumably there are lounge guests who buy these, otherwise they would most likely not be there.