Hi,
Is it "not exchangeable in cash" or "non exchangeable for cash"
'For', not 'in'.
"not exchangeable for cash" is more grammatical.
"non-exchangeable for cash" If you want to say this, add the hyphen after 'non'.
But if you exchange something for cash, would you not call that a refund?
So, wouldn't you just say 'No refunds' or 'non-refundable'.
Best wishes, Clive