Gratis, free of charge (13)

I believe the answer is:

complimentary

I believe this clue is a double definition.

'gratis' is the first definition.
(synonyms)

'free of charge' is the second definition.
(thesaurus)

(Other definitions for complimentary that I've seen before include "Free (ticket); praising" , "Clammy pointer (anag) - costing nothing" , "Given free" , "Adulatory - gratis" , "Expressing approval - not to be paid for" .)

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

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