Get through more cash than English pounds, tons need changing (8)

'get through more cash' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'english pounds tons need changing' is the wordplay.
I cannot really see how this works, but
'english' could be 'e' (abbreviation) and 'e' is located in the answer.
'tons' could be 't' and 't' is present in the answer.
an anagram of 'pounds' is 'ouspnd' which is within the left over letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

'than' is the link.

Can you help me to learn more?