1st option is a local pay ECA. The PSA can go to any of the local pay ECA's and buy there TripleClick items so that cash or current currency is accepted.
2nd places like PayPal and Bitcoin allow a person a chance to get a line of credit.
3rd Personal checks.
4th Direct Debit.
5th PayPal and Bitcoin allow a person to setup a line of credit. See if they can qualify.