I need to talk to the post office. If i have to send them as a parcel, economy air is $14 and normal air mail is $16.50. if I can send them as a letter (it'll depend on their weight and if I tie them, them may just be under the 2cm thickness limit), it'll be $11 by air mail and get to you within two weeks. I'm assuming that it's under 500g, but that's another thing I should ask about and check.

but if the weight turns out okay, you're looking at about 6 pounds, plus photocopying/binding costs. (I'm working on those right now.)