Earned more than, when refurbished (4,4)

I believe the answer is:

made over

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'refurbished' is the definition.
Although both the answer and definition are past participle verbs, I cannot see how they can define each other.

'earned more than' is the wordplay.
'earned' becomes 'made' ('make' can be a synonym of 'earn').
'more than' becomes 'over' (eg over 100 is more than 100).
'made'+'over'='MADE OVER'

'when' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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