I gave nirvana my real name and address, and paid with cash. I don't want to leave a money trail from buying seeds. I figure they are doing the marijuana growing community a favor by selling seeds to the states anyways after what happened to Marc Emery. Plus I highly doubt the Netherlands government would arrest people in Amsterdam on behalf of the DEA.
Either way, if they want to take my money and not send my seeds then so be it. But most people get their seeds, so it's a risk I am willing to take. Anyway 2 packs of seeds is only $70 or so. That's plenty of seeds to get a mother and clone, or even a female and male and get seeds. Plus $70 isn't really a big loss. I mean yeah, it's $70.. but I buy an eighth for $45 every 2 days. That's 4 days without buying pot, no biggie because I still know people who will smoke me some.
Anyway, if you can justify losing the money if your seeds don't come just send cash. Even if you paid with a credit card they would not refund your money if you didn't get your seeds most likely, they could claim they sent them out and you couldn't do anything about it. You certainly can't sue them for marijuana seeds in U.S. court, and the Netherlands courts will probably laugh at you.