I've just come across this eBay auction, I have never heard of these before, anyone seen them or are they just a type of shallot?
http://cgi.ebay.co.uk/PREGNANT-ONION-Very-rare_W0QQitemZ230160936461QQihZ013QQcategoryZ42211QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Firstly it is mislabelled it is actually Ornithogalum caudatum more commonly known as False Sea Onion or Pregnant Onion. It is a non-edible succulent which resembles an onion & is very expensive considering chiltern seeds offer a pack of 8 bulbils for £2.19 less than their starting price for 2.
Thanks for that! ;D