Just to update, he is off to his new home, all paperwork and dinero exchanged. Phew, one less mouth to feed and I FINALLY got my mare back. She was such a great mother, but she was so concerned with him, I couldn't ride or work her to any extent, and even grooming could be difficult if he was hollering for her. Raising baby was fun, but I am glad it's over.
And yes, Cynical, he was listed on every draft and local horse page I could find on FaceBook, an ultimately, that's how I sold him. It really surprises me with the way horse sales have changed from putting flyers up at your local feed store, to websites (like Dreamhorse or HorseClicks) to now do most marketing and sales through a Facebook post.