Nourish many, at a price (4)
I believe the answer is:
feed
'nourish' is the definition.
(I've seen this before)
'many at a price' is the wordplay.
'many' becomes 'd' ().
'at' says to put letters next to each other (I've seen this in other clues).
'a price' becomes 'fee' (I've seen this before).
'd' after 'fee' is 'FEED'.
(Other definitions for feed that I've seen before include "Provide something to eat" , "Paid" , "take courses" , "Fodder" , "Straight man" .)