Prices not wrongly set for municipal official? (9)
I believe the answer is:
inspector
'municipal official?' is the definition.
(inspector can mean an official)
'prices not wrongly set' is the wordplay.
'wrongly set' indicates an anagram (letters set in the wrong order).
'prices'+'not'='pricesnot'
'pricesnot' anagrammed gives 'INSPECTOR'.
'for' is the link.
(Other definitions for inspector that I've seen before include "Person whose job it is to examine efficiency as in schools" , "Police officer" , "Police rank" , "Examining official" , "bluebottle!" .)