Does anyone know where exactly the best place to buy international pre-paid visa's are? I've looked all over gas stations, Walmart. Altra Federal Credit Union's Visa International Prepaid card can be used to make purchases at millions of Visa debit locations worldwide. Altra membership. Accepted worldwide, use this prepaid travel card for purchases anywhere, and feel Use our international toll-free phone numbers to report a lost or stolen Visa. Along with key review factors, this compensation may impact how and where products appear across the site including, for example, the order in which they appear. Where can my Visa International Prepaid Card be used? Altra Membership is required to order our Visa International Prepaid Card. See card packaging for details or contact card issuer. Are there transaction or reload limits?