How about 7 1 1 for overseas PAYPAL to buy Thunderbolt cards with VISA credit cards?
When I buy game cards in China, I often charge them at 7 1 1, which is very convenient, quick and timely. If you recharge to buy a game card, you might as well try it. Their website also supports paypal payment, which is more convenient. I suggest you try. Baidu 7 1 1 is convenient for charging.