Total in excess of a couple of pounds (7)
I believe the answer is:
overall
'total' is the definition.
(synonyms)
'in excess of a couple of pounds' is the wordplay.
'in excess of' becomes 'over' (I've seen this before).
'couple of' shows that letters should be duplicated.
'pounds' becomes 'l' (L can represent the monetary pound).
'l' duplicated is 'll'.
'over'+'a'+'ll'='OVERALL'
(Other definitions for overall that I've seen before include "generally speaking" , "Taking account of all the factors" , "Omnipotent" , "It protects a worker" , "sweeping?" .)