Cranny; corner of market (5)
I believe the answer is:
niche
I believe this clue is a double definition.
'cranny' is the first definition.
(I've seen this in another clue)
'corner of market' is the second definition.
(I've seen this before)
(Other definitions for niche that I've seen before include "hole" , "Small corner of e.g. market" , "Cosy corner?" , "Shallow recess in a wall" , "somewhere comfortable" .)