Amount paid by quite contrary girl for an aromatic plant (8)
I believe the answer is:
costmary
'an aromatic plant' is the definition.
(I've seen this before)
'amount paid by quite contrary girl' is the wordplay.
I cannot really understand how this works, but
'amount' could be 'mar' (Mar is an example) and 'mar' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for costmary that I've seen before include "Herb" , "Aromatic plant" .)