Penny-pincher missed half-off on retiring draper's seconds (5)
I believe the answer is:
miser
'penny-pincher' is the definition.
(I've seen this before)
'missed half-off on retiring draper's seconds' is the wordplay.
'half' suggests halving the letters.
'off on retiring draper's seconds' becomes 'er' (I can't justify this - if you can you should give a lot more credence to this answer).
'missed' halved is 'mis'.
'mis'+'er'='MISER'
Can you help me to learn more?
(Other definitions for miser that I've seen before include "One hoarding money" , "Mean person" , "Wealth hoarder" , "Penny-pincher" , "Stingy hoarder" .)