Fruit — penny off, the whole lot (4)
I believe the answer is:
each
'the whole lot' is the definition.
(each and every one)
I don't understand the remainder of the clue.
(Other definitions for each that I've seen before include "Every one of a number" , "...per head" , "Every - apiece" , "Everyone separately" , "Ache (anag.)" .)