Business Personal. Instead of buying directly with cash, you instead need to use a voucher like Flexepin or Neosurf. How to buy Bitcoin Cash. Only a legal professional can offer legal advice and Buy Bitcoin Worldwide offers no such advice with respect to the contents of its website. It depends how much you trust the exchanges. Where can I find Bitcoin Cash locally? Supporting 25 countries, BCH can be bought using the most convenient local payment method; including bank transfers, PayPal, TransferWise, supported fiat deposits, direct deposits and M-Pesa.