Source:
http://www.nirvanashop.com/us/payment-methods
* Credit Card
We accept Visa and MasterCards. Paying by credit card is the quickest method of payment. It is also very safe, as all payments go through a Secure Payment Gateway (SSL). On your credit card statement, your payment will be discreetly listed under a safe, non-cannabis related name.
Gift cards or pre-paid cards issued by Visa or MasterCard may also work, but please drop us a line if you experience issues paying with these. Note that it has to be a CREDIT card, debit cards (such as Visa Electron) will not work as we cannot take debit card payments. Also make sure you have a card that allows international payments to be made! Your payment will be discreetly listed under "Themis" or "thisipod" on your credit card statement.
Drop them a line, as stated about your prepaid not working.
I understand they said debit cards will not work, but a Prepaid Travelers Visa/MaterCard is considered as a Credit Card, and they work internationally.
I am a manager at Banana Republic, and tourists constantly use travelers prepaid Visa cards to pay, and employees always have to select the Credit Card option.