Crossword Genius

Carrier of mine, from rubbish place, about twenty-five pounds (3,4)

Ross

I believe the answer is:

pit pony

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'carrier of mine' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'rubbish place about twenty-five pounds' is the wordplay.
'rubbish place' becomes 'tip' (place for rubbish).
'about' says the letters should be written in reverse.
'twenty-five pounds' becomes 'pony' (UK slang for 25).
'tip' backwards is 'pit'.
'pit'+'pony'='PIT-PONY'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for pit pony that I've seen before include "animal" , "underground worker" , "mineworker" .)

I've seen this clue in The Times.
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