What does the cryptic crossword clue "... free, when retail use has been reviewed (2,7)" mean?

The definition is "f". The wordplay uses an anagram. anagram of RETAIL + USE = ATLEISURE; definition: "... free," The answer is ATLEISURE.

... free, when retail use has been reviewed (2,7)

Guardian Cryptic #29197 | 2 Down | 2023-10-10 flower