A timely and interesting post that I thought would be worth including in this thread.
http://www.faunaclassifieds.com/foru...d.php?t=695947
It certainly points out that a lack of results can be bad luck and that perhaps parties should be extra patient realizing that the results they were hoping for may not necessarily be because the animal is not a het.
However, I do feel that if a seller voluntarily chooses to agree to a replacement, that changing that agreement or adding extra requirements at the last minute is very poor customer service.