Cruel sort of dosh (5)
I believe the answer is:
lucre
'dosh' is the definition.
(I know that lucre is a type of dosh)
'cruel sort' is the wordplay.
'sort' indicates anagramming the letters.
'cruel' is an anagram of 'LUCRE'.
'of' is the link.
(Other definitions for lucre that I've seen before include "Possession of the rich" , "Wealth - cruel (anag)" , "financial gain" , "profits" , "Cash" .)