Crazy race around commercial shops (6)
I believe the answer is:
arcade
'shops' is the definition.
(I've seen this before)
'crazy race around commercial' is the wordplay.
'crazy' indicates anagramming the letters.
'around' indicates putting letters inside.
'commercial' becomes 'ad' (abbreviation for advertisement).
'race' is an anagram of 'arce'.
'arce' going around 'ad' is 'ARCADE'.
(Other definitions for arcade that I've seen before include "covered avenue of shops" , "Here one may find shops" , "Covered passageway with shops and stalls" , "Covered walk with shops" , "Covered (shopping) walk" .)