I will send you postage. I heard Datura seeds are easy to produce. I have some poppies, but I don't have seeds from them yet, but I may be able to come up with some poppy seeds for trade. I do have white oxiles, but there is this law about not shipping plant material around CA, but I may be able ship the bulb type roots outward bound, but I can not receive any vegetable matter due to quarantine, but that does apply to seeds. You can look at the poppies here, on my Flickr Page.

http://www.flickr.com/photos/tropicalthought/