I tried to offer the buyer a refund, if he would send the book back. I saw he posted our conversations.
He started the email with this:
Send me the $300 back via paypal tonight and I will send you the graded book via priority mail tomorrow. I am a lawyer licensed with the Florida, New York and DC Bars. I tell you this because if I don't send the book to you as promised, you can file a bar complaint against me in those jurisdictions in addition to any other rights you may have. Happy to discuss. Brad Seldin, Esq.
After multiple attempts to get the book back, buyer won’t send.
I agreed to give him original purchase price from eBay. He finally wrote this:
If you can not commit in writing to sending me $300 after you get the book, we can not work this out.