The head of a chain of hardware stores in Chita, Siberia, said that demand had trebled the prices of candles, The Telegraph reports.
According to the paper, some shopkeepers have taken a tongue-in-cheek approach, flogging "Meet the End of the World" kits which include a tot of vodka, a bar of soap, and a piece of rope.
But others appear to be awaiting a genuine cataclysm.
In Barnaul, close to the Altai Mountains, panic-buyers snapped up all the torches and Thermos flasks, while locals in Omutninsk in Kirov region rushed to buy kerosene and other supplies after an article supposedly written by a Tibetan monk appeared in the local paper confirming the prediction of a December 21 catastrophe, the paper said.