I don't understand economics

I've just been putting some books I'll never read again for sale on Amazon. When I wanted to sell "Light years" by James Salter I stumbled over these offers:
http://www.amazon.de/exec/obidos/tg/detail/offer-listing/-/3499224348/all/ref=ufu_lmi_/028-4660222-6203709
Three distinct offers for one Euro cent! Even if one takes into consideration that they make a few cents through the shipping margin Amazon gives to the seller, they can hardly make a profit with that...