Estimated trade turnover (5)
I believe the answer is:
rated
'estimated' is the definition.
(I've seen this in another clue)
'trade turnover' is the wordplay.
'turnover' indicates an anagram.
'trade' is an anagram of 'RATED'.
(Other definitions for rated that I've seen before include "Taxed" , "Trade (anag.)" , "Scolded, estimated" , "Classified or graded" , "Estimated, set at" .)