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Flop on holiday beach was very pricy (4,1,4)

Ross

I believe the answer is:

cost a bomb

'was very pricy' is the definition.
(if something costs a bomb it is very expensive)

'flop on holiday beach' is the wordplay.
'flop' becomes 'bomb' (bomb is a kind of flop).
'on' is a charade indicator (letters next to each other).
'holiday beach' becomes 'costa' (eg the Costa del Sol).
'bomb' after 'costa' is 'COST A BOMB'.

I've seen this clue in The Times.
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