Trade is without high standards (6)
I believe the answer is:
ideals
'high standards' is the definition.
(I've seen this before)
'trade is without' is the wordplay.
'trade' becomes 'deal' (synonyms).
'without' means one lot of letters goes inside another.
'deal' going inside 'is' is 'IDEALS'.
(Other definitions for ideals that I've seen before include "Bad ladies have high principles" , "Morals" , "Standards to be aimed at" , "Lofty aspirations for ladies" , "High values for ladies" .)