You could actually buy a visa or any other type of gift card and use that as a credit card to buy things online. I have done it several times and to prove it, I had bought this new case for my iPod touch a few weeks ago:

And also I was thinking of getting that figure of Astro, but I liked this one instead: (and it was also cheaper: $150 vs $350)




I just thought that this one looked better, but if I could've I would have bought both. I never regretted buying it and I don't think I ever will. It is my most prized Astro Boy possession.
Btw, sorry for the low quality pics. All the pictures were taken, edited and uploaded from my iPod touch.