Ebay eggs are sometimes very dodgy, too old or too dirty to hatch and sometimes incredibly expensive for what they are. Plus they have to go through the post, which adds travel time and increases the risk that they will be badly shaken up en route. However, there are some good breeders on eBay and maybe people on here could recommend one, if we knew what you were after, Any idea what breed of bantams you're looking for? It's possible that some of our knowledgeable members might be able to supply you with suitable eggs, well-packed, nice and fresh, and from good parent stock - (the conditions the parents are kept in, and their age and fertility, are very important to the hatch rate and strength of the chicks.) Whereabouts do you live, and how far would you be happy to travel to collect eggs yourself so they don't have to be posted?