You can use a cryptocurrency to pay for your Surfshark 30-day trial. The platform currently accepts several cryptocurrencies, including Bitcoin, Bitcoin Cash, Ethereum, and Lite Coin. Currently, these purchases can only be processed using CoinGate and CoinPayments. Conveniently, Surfshark also claims to refund payments made in cryptocurrency (based on the US dollar rate of exchange at the time of the refund). But keep in mind that there must be a clear transaction path for the refund to be successful. If either party makes a mistake with the crypto transaction, it might be impossible to reverse the funds.