Crossword Genius

Succeed in establishing meaning of price he'd negotiated (8)

Ross

I believe the answer is:

decipher

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'succeed in establishing meaning' is the definition.
I can't tell whether this definition defines the answer.

'price he'd negotiated' is the wordplay.
'negotiated' is an anagram indicator (negotiate can mean to organise or arrange).
'price'+'hed'='pricehed'
'pricehed' is an anagram of 'DECIPHER'.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for decipher that I've seen before include "Make sense of" , "Convert code into normal language" , "Convert code to ordinary language" , "Interpret, solve" , "Read with difficulty" .)

I've seen this clue in The Telegraph.
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