If you currently own the rights to them and have registered them in your name, these valued domains would have already garnered calls from interested parties, if there were any. I have about thirty of them and receive inquiries, from time to time about the purchase of some of these. I had to pay two grand to get one before a jerk made a porn site out of it. He wanted five grand and I told him to pound sand. Two years later he came crawling back and made the deal. For my business, it was worth every penny.