Not a lot of money for snack food (7)
I believe the answer is:
peanuts
'not a lot of money' is the definition.
I can't tell whether this defines the answer.
'snack food' is the wordplay.
'snack' becomes 'peanut' (I've seen this before).
'food' becomes 's' (I can't justify this - if you can you should believe this answer much more).
'peanut'+'s'='PEANUTS'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for peanuts that I've seen before include "Popular edible seed pods" , "what could make up a packet?" , "pittance" , "Cartoon strip; tiny sum" , "Paltry sum of money" .)