Stolen goods dealer’s wealth is something to die for (7,7)

I believe the answer is:

capital offence

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'stolen goods dealer's' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'wealth is something to die for' is the wordplay.
I cannot quite see how this works, but
'wealth' could be 'capital' (I've seen this before) and 'capital' is present in the answer.
The remaining letters 'offence' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

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I've seen this clue in The Times.

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