@NamiOgawa
An off the shelf prepaid credit card will not work for most online international purchases of any kind.
I have a pre-paid Mastercard from "Univision" that I signed up for online and it is linked to me by name, address and SSN. This sort of card works just like a real credit card as long as it has funds on it.
To recharge it I just go to the local WalMart and add money to it when I want to buy things online or elsewhere that I don't want to risk my bank account debit card on.
There are other entities that offer the linked pre-paid Mastercard but I haven't looked for any recently. It shouldn't be hard to find with a little web surfing.