dont think you will ever stop them, i've reported loads of them and ebay aren't interested, a good way to fcuk these sellers up is to find listings of these recent boots where they dont state that they are re-issues, buy a couple then claim your money back through paypal stating the item was not as described, paypal / ebay always side with the buyer, get your refund but dont send them back.....worked for me...two copys of the recent mello souls boot are now residing down at the local landfill site
also, when the abusive / threatening messages appear in your ebay mail box, you can report them to ebay and get them chucked off ebay