Your right, you cant..even the best can throw a blinger and often do..but with some breeders your chances are a lot better of getting decent stock to work in but you are never guarenteed perfect birds from every egg....I seldome if ever see australop eggs for sale in here, but see a lot on ebay..Ive never sold eggs..dont feel confident in it so I just make them for myself ..nothings set in my chookies..Ive given a bunch away , especially to kids...even then just like all chickens anything can come out of that egg..I bought some from ebay quite a while ago, wound up getting jersey giants, gave them to 4 h kids..buyer beware on ebay..there are some really good reputable breeders in there, but its a gamble..some people are really good at posting great pictures that anrt even in this country ..I found some wowwie orps one time in ebay..osuman or one of the guys said, Lynne..look at this..the pictures were from a farm in england and they certianally were not selling on ebay..somone was using thier pics..very misleading..maybe they should use terms like potential sq but no guarentee which would be true