Money only for material (8)
I believe the answer is:
cashmere
'material' is the definition.
(cashmere is a kind of material)
'money only' is the wordplay.
'money' becomes 'cash' (I've seen this before).
'only' becomes 'mere' (I've seen this before).
'cash'+'mere'='CASHMERE'
'for' is the link.
(Other definitions for cashmere that I've seen before include "fine material" , "Soft wool - search me (anag)" , "'Fine, soft wool from a goat (8)'" , "knitted garment" , "Soft woollen fabric" .)