Crossword Genius

Note low discount (4,4)

Ross

I believe the answer is:

mark down

'discount' is the definition.
(thesaurus)

'note low' is the wordplay.
'note' becomes 'mark' (synonyms).
'low' becomes 'down' (similar in meaning).
'mark'+'down'='MARK-DOWN'

(Other definitions for mark down that I've seen before include "Score points off" , "Lower cost" , "Reduce in price" .)

I've seen this clue in The Telegraph.
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