i cant remember mate but i think to have 6 hens so that 12 young ones they guarantee that 4 hens will be fertile and u se one of there cocks as the father in which is probably some big national winner (think u can choose the father from there birds not sure ) i think it roughly works out at £30 £40 per young one in which the father will be a national winner that cheap enough it was a few year since i seen the vid this is the best i can do from seeing the vid maybe 5 6 years ago all the details im giving might be changed or a little different but I'm fairly right i think