Less expensive (7)
I believe the answer is:
cheaper
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">less expensive</span>' is the definition.<br/ ><span class="explanation-format__explanation">('cheap' can be the opposite of 'expensive' so perhaps 'cheaper' is reasonable for 'less expensive')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cheaper that I've seen before include "Comparatively despicable" , "more affordable" , "Less costly" , "More reasonable" , "Less expensive or tasteful" .)