To shop around for pictures (6)
I believe the answer is:
photos
'for pictures' is the definition.
(photo is a kind of picture)
'to shop around' is the wordplay.
'around' is an anagram indicator.
'to'+'shop'='toshop'
'toshop' is an anagram of 'PHOTOS'.
(Other definitions for photos that I've seen before include "Camera pictures" , "snaps" , "In brief, snapshots" , "Shots" , "prints" .)