Price often adjusted — that’s achievable in practice (10)
I believe the answer is:
perfection
'achievable in practice' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'price often adjusted' is the wordplay.
'adjusted' indicates anagramming the letters.
'price'+'often'='priceoften'
'priceoften' anagrammed gives 'PERFECTION'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for perfection that I've seen before include "Highest state" , "Faultlessness" .)