Use this website to find out how much your domain name is worth. Apparently bennyong.com is only worth this much but regardless the price, I am never go to give up this domain. (at least this is what I have in mind now)
According to the site, my domain name is worth this much:
Dnscoop.com is something like Alexa's free report but instead, it evaluates the value of your website. This should be a good tool to use when you are thinking about acquiring a domain name from a seller.
Besides giving you an overview of your website evaluation, it also suggests ways you can increase the income of your webpage.
Try this tool on your own domain name and find out how much it is worth.