Somehow toff read of exchange (8)

I believe the answer is:

tradeoff

'exchange' is the definition.
(I know that tradeoff is a type of exchange)

'somehow toff read' is the wordplay.
'somehow' is an anagram indicator.
'toff'+'read'='toffread'
'toffread' is an anagram of 'TRADEOFF'.

'of' acts as a link.

I've seen this clue in The Daily Express.

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