Tory gets 50% off excellent headwear (3,3)
I believe the answer is:
top hat
'headwear' is the definition.
(I have seen 'Formal headwear ' mean 'top hat' so perhaps 'headwear' could also mean 'top hat')
'tory gets 50% off excellent' is the wordplay.
I cannot really understand how this works, but
'excellent' could be 'top' (top can mean the best) and 'top' is found in the answer.
The remaining letters 'hat' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for top hat that I've seen before include "Kind of headgear, goes with 28 down" , "Posh lid" , "Formal headgear for man" , "Formal head covering" , "It is worn with tails" .)