Party members were supposed not to go into ordinary shops (’dealing on the free market’, it was called), but the rule was not strictly kept, because there were various things, such as shoelaces and razor blades, which it was impossible to get hold of in any other way.
There are no more uses of "free market" in the book.
Show samples from other sources
THE FREE MARKET MUST BE CONTROLLED IN CERTAIN CASES.
Trenton Lee Stewart -- The Mysterious Benedict Society
And I had about half a million local francs in various banks—about fourteen thousand dollars at the official rate of exchange, and half that on the free market.