Cash handling is expensive (cash pickup logistics, compliance fees, banking fees, insurance fees, you name it). But it IS from one bearer instrument (cash) to another bearer instrument (Bitcoin) - and that’s hugely valuable. Wire transfer fee at Suntrust for instance is currently at $50, for example: https://transferwise.com/us/blog/international-transfer-sunt... https://www.suntrust.com/content/dam/suntrust/us/en/personal...