Just by looking at their patterns. I'm trying to get the owner to give me the original breeder's number so I can call and ask about their genetics, but the owner wants $45 a piece. I think it's steep, personally, but I wanted some opinions. I am assuming they are all normals.
Photos:
http://www.flickr.com/photos/57484184@N04/5703734423/
http://www.flickr.com/photos/5748418...n/photostream/
http://www.flickr.com/photos/5748418...n/photostream/