Crossword Genius

Pump up popular apartment price finally (7)

Ross

I believe the answer is:

inflate

'pump up' is the definition.
(I've seen this before)

'popular apartment price finally' is the wordplay.
'popular' becomes 'in'.
'apartment' becomes 'flat' ('flat' can be a synonym of 'apartment').
'finally' indicates one should take the final letters.
The last letter of 'price' is 'e'.
'in'+'flat'+'e'='INFLATE'

(Other definitions for inflate that I've seen before include "Enlarge" , "Blow up like balloon" , "Fill with gas" , "Cause to swell" , "Lean, fit (anag.)" .)

I've seen this clue in The Telegraph.
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