From what I have heard, if you are lucky enough for the EBay seller to actually send the eggs, none will be fertile. He will keep "replacing" eggs and drag out the deal until the time has expired for you to be able to leave feedback. This guy has gone under 6 different usernames over the years and has actually been traced back to a horse scammer also.
I hate a thief and that is what he is. He stole photos from my good friends and fellow breeders (both locally, on BYC, and in the UK) and claimed this pictures were his own.
If you type in Ayam Cemani on google images the photo's he used in his add will be some of the first results. He just copied and pasted them onto the add.
Here are the locations of the stolen images:
http://www.kaskus.co.id/thread/50e9577fe674b48637000001/ayam-cemani-super-asli-kedu-bergaransi
http://www.arche-reservat-holle.de/html/ayam_cemani.html
http://martsiano.wordpress.com/2008/05/18/ayam-cemani/
Boykin, how were you able to figure out who this seller was and other usernames he has used?