Advantage or profit (7)
I believe the answer is:
benefit
This clue is a double definition.
'advantage' is the first definition.
(I've seen this in another clue)
'profit' is the second definition.
(I know that profit can be written as benefit)
(Other definitions for benefit that I've seen before include "(Gain) advantage" , "Fine bet on to produce an advantage" , "Fine bet (anag)" , "Handout" , "Payment" .)