For sale to the public (6)
I believe the answer is:
retail
'for sale to the public' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for retail that I've seen before include "This trade serves the general public" , "Sell in small quantities" , "Narrate or sell to public" , "Form of sales" , "Trade selling goods to the general public" .)