HomeSchoolers Selling Ilegal Stuff on Ebay??

I just tried to list some of the home school materials I had from last school year on Ebay. I barely had time to get the books listed before I got an email stating that they took my listing off and took my fees with it because I was selling teacher editions and keys. From what I'm understanding this is considered illegal on Ebay. They lump it right in with trying to sell drugs and other such illegal stuff. I just can not believe this. I'm not really sure why mine was booted off so quick when I seen some that were listed for the same books for 5 days had managed to stay listed even with the words teacher edition and answer keys right in the heading. Funny thing is I bought all the stuff I was trying to sell on Ebay including the teacher ed/keys. Seems like descrimination against homeschoolers to me.