I shipped priority, and because my item weighs, like, nothing at all, even with a heavy-ish bag of sweets it was only a bit over 5 euros from Finland to the US. No DC or anything, though, because it counted as a large letter, not a package. I think it would have cost triple that if I'd sent it as a package, and I would have had to buy a stupidly large box.
The post office lady put my postage in stamps, instead of the regular 'sticker'! I love packages with a bunch of stamps.
I haven't hear from my partner in a month, and apparently the organisers haven't either. I'm getting a bit worried. :/ I hope she's just busy or away from the internet.