The rest cure as ordered amassed wealth (8,5)

I believe the answer is:

treasure chest

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'the rest cure as ordered amassed wealth' is the definition.
I can't tell whether this defines the answer.

'the rest cure as ordered' is the wordplay.
'ordered' indicates an anagram.
'the'+'rest'+'cure'+'as'='therestcureas'
'therestcureas' is an anagram of 'TREASURE-CHEST'.

Can you help me to learn more?

(Other definitions for treasure chest that I've seen before include "Source of riches" , "Container of much wealth" , "Box containing gold etc" , "Valuable container" , "Precious box" .)

I've seen this clue in The Globe and Mail.

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