Perhaps you could make use of RSorder to sell your old-fashioned accounts and RS Gold. On RSorder you can contact them via live chat and place an "sale gold" request. Once they have received your request to sell the company will instantly communicate with you via live messaging or Skype message and give you an affordable price. Once they have confirmed the sale to you, they are able to decide to get immediate cash payment via PayPal, G2A, Skrill or Bitcoin.
I've used this website many times and it's highly secure and reliable! They're extremely professional and their service is excellent. Visit RSorder to test it. I wish you a pleasant price!