Likely cost of this person's cracking country pile (8)
I believe the answer is:
estimate
'likely cost' is the definition.
'this person's cracking country pile' is the wordplay.
I cannot quite see how this works, but
'person' could be 'mate' (mate is a kind of person) and 'mate' is present in the answer.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for estimate that I've seen before include "Meatiest (anag) - figure" , "Judge the approximate cost of" , "Make an approximate assessment" , "Calculate roughly" , "Make approximate judgement of size or amount" .)