It has value as brandable domain names so it is really hard to predict for how much you could sell it. There are no SEO value/benefits from using this domain names but only the brand name. Usually brand names are sold for $500-5000 but it is ridiculosuly difficult to find the buyer for these domain names. Make sure how many monthly Whois searches you get for your domain names, if none then it is most likely that you will never sell it.
If you find the right buyer you can get it sold for real good price. Just park it, relax for some years and see if you get any offer to your mail box. Keep it