Under California law, as a Seller I can choose whether to sell to a particular buyer, or not. Now, I cannot refuse to sell to someone who is insulting with a lowball offer. Today, when I countered an offer and the potential buyer withdrew his unacceptable offer with another lowball offer (which is just another insult as my counteroffer took his offer off the table), I can't even block this jerk. Ebay, no wonder sellers are running away from your company, I've been selling since 1998 and I am history.