Crossword Genius

Liberated collection at no charge (3,4)

Ross

I believe the answer is:

set free

'liberated' is the definition.
(I've seen this in another clue)

'collection at no charge' is the wordplay.
'collection' becomes 'set' (set is a kind of collection).
'at no charge' becomes 'free' (I've seen this in another clue).
'set'+'free'='SET FREE'

(Other definitions for set free that I've seen before include "Turn loose" , "no longer confined" , "Uncaged birds have been" , "Deliver - release" , "no longer detained" .)

I've seen this clue in the Sydney Morning Herald.
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