Amount paid (4)
(Other definitions for price that I've seen before include "Cost of purchase" , "Listed cost" , "Betting odds" , "Amount for which a thing is sold" , "What has to be paid" .)
'amount paid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cost that I've seen before include "Amount to pay" , "Outlay required to buy" , "Charge" , "Come to" , "Be priced at" .)