With a credit card it doesn't matter what age you are! I was ordering all kinds of shit when I was underaged.

But to "research with this stuff" you have to do some research yourself. This is where you start: http://www.google.com/

And go look. Go to other forums, talk to people, look through posts, look through sites, get them verified of legitmacy with knowledge people, and that's how you find a source. It's not easy and will take some time. It took me 3 days straight searching to find another source after the DEA raid on July 21st. You can find anything on the internet if you look hard enough.