What the OP is probably going to realize is that he will probably not get the $3,000 he is asking, more like $2,300 - $2,500. So it will most likely be a wash between selling and eating the shipping costs sending them back. Sending them back is a sure thing. Selling can be a PITA. Having guys show up to your house, listening to them, kicking the tires, sales falling through. I hope I'm wrong for his sake. I do empathize as I purchased Tektons and Spatials and ended up sending them back. No more un-auditioned speaker buying for me. Probably didn't do himself any favors by trashing the same speakers he's trying to sell.
