Can with ten free nuts, last of those going in tin? (8,3)
I believe the answer is:
entrance fee
'going in tin?' is the definition.
(money or 'tin' required to go in)
'can with ten free nuts last of those' is the wordplay.
'with' means one lot of letters go next to another.
'nuts' is an anagram indicator (nuts can mean crazy).
'last of' suggests the final letters.
The last letter of 'those' is 'e'.
'ten'+'free'='tenfree'
'can' after 'tenfree' is 'tenfreecan'.
'tenfreecan' with letters rearranged gives 'entrancefe'.
'entrancefe'+'e'='ENTRANCE-FEE'
(Other definitions for entrance fee that I've seen before include "Admission charge" , "Getting in charge" .)