Selling (7)
I believe the answer is:
vending
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">selling</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that vending is a type of selling)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for vending that I've seen before include "This machine sells things" , "Selling" , "Trading" .)