Amazon approached to include buyback option (2,5)

I believe the answer is:

on appro

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'buyback option' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'amazon approached to include' is the wordplay.
'to include' indicates a hidden word.
'ON APPRO' can be found hidden inside 'amazon approached'.

Can you help me to learn more?

(Other definitions for on appro that I've seen before include "facing trial" , "for testing?" , "Waiting for green light" .)

I've seen this clue in The Irish Times.

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