Crossword Genius

Angry estate agent is murdering them though they brought in a load of money (4,1,7)

Ross

I believe the answer is:

made a killing

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'them though they brought in a load of money' is the definition.
The definition suggests an adverb but the answer is not.

'angry estate agent is murdering' is the wordplay.
'angry' becomes 'mad' (similar in meaning).
'estate agent' becomes 'ea' (this could be a standard abbreviation of which I'm unaware).
'is murdering' becomes 'killing' (I've seen this before).
'mad'+'ea'+'killing'='MADE A KILLING'

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I've seen this clue in The Irish Times.
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