Buy the farm if interior of study gets fitted out (7)
I believe the answer is:
readied
'buy the farm if interior' is the definition.
I can't judge whether this defines the answer.
'study gets fitted out' is the wordplay.
'study' becomes 'read' (synonyms).
'gets' says to put letters next to each other.
'fitted out' becomes 'ied' (I can't explain this - if you can you should give a lot more credence to this answer).
'read'+'ied'='READIED'
'of' acts as a link.
Can you help me to learn more?
(Another definition for readied that I've seen is " Made fit ot prepared for action".)