*blush* You can send your money through RL mail. You can't send checks from outside the US and money orders cost as much as the money you're trying to send, most of the time (meaning you'll have to pay €10,0-or something while you're only trying to send €20,-), which basically means your only option is to put the (changed, dollar) money and the printout of your order in an envelop and hope it reaches them well.

I'm kind of worried about how I'm going to support the Archive, because I doubt they'll let me send the money cash.