I've dug out the book :) p. 99 it says (rough translation): "I remember an anecdote from 1982. That year, the vacuum cleaner used in the saliout 7 station failed. I had the opportunity to admire the simplicity and efficacy of the Russian method. An ordinary vacuum cleaner was bought from Star City supermarket, sent to Baïkonur via the next plane and loaded into the next Progress cargo ship. Once aboard the station, it was plugged in, and worked perfectly. Problem solved. The whole operation costed 5 rubles (1 US $)".