Hours later the audience realize that the money and the clothes were black magic and not real. The money changes into labels of wine bottles, and the clothes disappear, leaving women on the street in their underwear. The black magic show was Bulgakov's way of making a satire of communism. These people were living under Stalin in a communist state, in which everyone is supposed to be equal, having the same amount of money and working for that money. Yet money, that has such a sweet and inimitable smell, falls down from the ceiling and these communists eagerly reach for it and stuff it into their pockets.
Women rush onto the stage to exchange their frocks for new fashionable outfits.
These people are really materialists and are seduced by money. This proves to be true in the novel. After Berlioz dies there is a flock of people who desire to have Apartment 50, even his own uncle goes to Moscow tries to rent the apartment instead of going to his nephew's funeral. The bartender hides a good supply of money underneath his bed instead of giving it to the government. All of these events in the novel are Bulgakov's way of showing that communism doesn't work in societies which have tried to implement communism, and will probably never work at all because people are materialistic and greedy.