Is it possibel?
I would call and ask them. You may be able to pay in gold or silver too. I think the CFAI also accepts Nigerian bank cheques, but only if you provide your social security number and bank account number in Lagos.
Yes - when you’re registering it lets you pay by credit card or by check, then you mail the registration with the ‘cheque’. They pay 10% under spot on commodities, depending on the level of cantango in the market place.