Sid's upset about me getting so little money! (5)

I believe the answer is:

dimes

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'getting so little money' is the definition.
I can't judge whether this definition defines the answer.

'sid's upset about me' is the wordplay.
'upset' says the letters should be written backwards.
'about' indicates putting letters inside.
'sid' backwards is 'dis'.
'dis' placed around 'me' is 'DIMES'.

Can you help me to learn more?

(Other definitions for dimes that I've seen before include "US ten-cent coins" , "Tenths of dollars" , "Ten-cent coins of USA" , "Ten cent pieces" , "$0.10n (n>1)" .)

I've seen this clue in the Evening Standard.

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