Eggs are not animals. With care they will turn into animals. Type in the breed, with hatching eggs after it, like "Silkie hatching eggs". Be careful and always check the sellers feedback.
Also do a Google image search just to be sure the pictures in the auctions actually are of the birds who laid the eggs. I have several times now found sellers who use other folks' award-winning photos without bothering to mention that the chickens in the pictures were NOT the birds who were producing the eggs that are being auctioned! Needless to say, I did NOT bid on those eggs!