Energetic, moving into final drastic price hike (14)

I believe the answer is:

hyperinflation

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'drastic price hike' is the definition.
The definition suggests a singular noun which matches the answer.

'energetic moving into final' is the wordplay.
'energetic' becomes 'hyper' (hyper can mean hyperactive).
'moving' is an anagram indicator.
'into'+'final'='intofinal'
'intofinal' anagrammed gives 'inflation'.
'hyper'+'inflation'='HYPERINFLATION'

Can you help me to learn more?

(Other definitions for hyperinflation that I've seen before include "economic disaster" , "What may cause bubble to burst" .)

I've seen this clue in The Daily Express.

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