It's wonderful to get away with cheating (7,3)

I believe the answer is:

ripping off

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'cheating' is the definition.
('rip off' can be a synonym of 'cheat')

'it's wonderful to get away' is the wordplay.
'it's wonderful' becomes 'ripping' (I can't justify this - if you can you should believe this answer much more).
'to get' is a charade indicator (letters next to each other).
'away' becomes 'off' (synonyms).
'ripping'+'off'='RIPPING OFF'

'with' acts as a link.

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I've seen this clue in the Evening Standard.

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