Some free purchases returned for money! (5)
I believe the answer is:
rupee
'money' is the definition.
(currency of India)
'some free purchases returned' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'returned' says the letters should be written in reverse.
'eepur' can be found hidden inside 'free purchases'.
'eepur' in reverse letter order is 'RUPEE'.
'for' acts as a link.
(Other definitions for rupee that I've seen before include "low cost in Pakistan?" , "11 [LOLLY] in Kerala" , "Indian coin" , "foreign currency" , "Currency of the subcontinent" .)