I have a folder (printed, not one I've put together myself) of handouts that I have put up for sale on eBay. Someone has contacted me to say I can't sell it as it is copyright material. Surely if I paid to attend these classes and was given the handouts I can sell them on ebay? It's not as though I have made copies and am trying to sell them. Also if not how on earth is it possible for people to sell second hand books on Amazon?