there is a new site i recently came across called incspring(dotcom), its a marketplace to sell and buy branding/logo with or without a domain. whats nice is the if you have a logo design that is not in use, you can post it there, and state your price. i think its free. since its a new site , i dont know how many companies are actually buying branding/logos, but its hey, its free. i an not connected with the site. also, if you have extra domains not in use and have graphics skills, you can make a brand with the domain name and charge extra.