Market a good storage centre (5)

I believe the answer is:

agora

'market' is the definition.
(ancient Greek market area)

'a good storage centre' is the wordplay.
'good' becomes 'g' (abbreviation).
'centre' says to take the centre.
The central letters of 'storage' are 'ora'.
'a'+'g'+'ora'='AGORA'

(Other definitions for agora that I've seen before include "Israeli monetary unit" , "Place for meetings" , "meeting place" , "11 [LOLLY] to Ben-Gurion" , "Marketplace in ancient Greece" .)

I've seen this clue in the Sydney Morning Herald.

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