Fastidious refinement as toy price is adjusted (10)

I believe the answer is:

preciosity

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'fastidious refinement' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'toy price is adjusted' is the wordplay.
'adjusted' is an anagram indicator.
'toy'+'price'+'is'='toypriceis'
'toypriceis' is an anagram of 'PRECIOSITY'.

'as' is the link.

Can you help me to learn more?

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

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