Penny-pincher demanding full roll (8)
I believe the answer is:
tightwad
'penny-pincher' is the definition.
'demanding full roll' is the wordplay.
'demanding' becomes 'tight' (similar in meaning).
'full roll' becomes 'wad' (as in a roll or wad of banknotes).
'tight'+'wad'='TIGHTWAD'
(Other definitions for tightwad that I've seen before include "Skinflint" , "Mean person (US)" , "Miser (sl.)" , "Miserly person" , "Cheapskate" .)