Gold pair ordered, being recklessly extravagant (8)
I believe the answer is:
prodigal
'recklessly extravagant' is the definition.
(I've seen this before)
'gold pair ordered' is the wordplay.
'ordered' indicates an anagram.
'gold'+'pair'='goldpair'
'goldpair' with letters rearranged gives 'PRODIGAL'.
'being' acts as a link.
(Other definitions for prodigal that I've seen before include "Spendthrift" , "Extravagant - lavish" , "Wastefully extravagant" , "Recklessly wasteful or extravagant" , "Extravagant like Biblical son" .)