Agreed, this extension is not worth spending a penny on outside of super premiums (which are most likely all bought up... those remaining are available for a reason). Social media marketing has no value in this extension. That being said, it is a LLL so if the extension ever picks up, it could be worth something. Right now, you are looking at regfee or low $xx at best. If you are willing pay for years of registration, it might be worth something in the future if things change, but that is a very costly risk at $30/40 per year.
Hope this helps!