Cost of hire (6)
I believe the answer is:
rental
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cost of hire</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rental that I've seen before include "Something paid for hire" , "Tenant's payment" , "To do with a letting" , "Charge to hirer" , "Hire charge" .)