Rip off coat (6)
I believe the answer is:
fleece
This clue is a double definition.
'rip off' is the first definition.
(fleecing is a kind of ripping off)
'coat' is the second definition.
(fleece is a kind of coat)
(Other definitions for fleece that I've seen before include "Charge too much" , "Overcharge" , "winter coat" , "Outer coat of sheep" , "Woollen coat of sheep" .)