Write to New York for a little money (5)

I believe the answer is:

penny

'little money' is the definition.
(small amount of money)

'write to new york' is the wordplay.
'write' becomes 'pen' (synonyms).
'to new york' becomes 'ny'.
'pen'+'ny'='PENNY'

'for a' is the link.

(Other definitions for penny that I've seen before include "Bronze coin" , "Little bit of 18" , "Small unit of currency" , "Smallest UK coin" , "one might drop" .)

I've seen this clue in the Evening Standard.

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