Crossword Genius

Fussy person, one making selection after getting money back (9)

Ross

I believe the answer is:

nitpicker

I'm a little stuck... Click here to teach me more about this clue!

'fussy person one' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'selection after getting money back' is the wordplay.
'selection' becomes 'picker' (I can't justify this - if you can you should believe this answer much more).
'after getting' means one lot of letters go next to another.
'money' becomes 'tin' (I've seen this before).
'back' is a reversal indicator.
'tin' backwards is 'nit'.
'picker' put after 'nit' is 'NITPICKER'.

'making' acts as a link.

Can you help me to learn more?

(Other definitions for nitpicker that I've seen before include "Particular person" , "Petty finder of errors" , "pedantic fault-finder" , "critic" , "Fussy fault-finder" .)

I've seen this clue in The Independent.
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