Costly brew (5)
I believe the answer is:
steep
I believe this is a double definition.
'costly' is the first definition.
(thesaurus)
'brew' is the second definition.
(synonyms)
(Other definitions for steep that I've seen before include "Precipitous - exorbitant" , "Rising sharply" , "Hard for cycling" , "Lofty" , "pickle" .)