First of all, go to this website:
http://www.bctalkaccountpricer.info/Plug in your bitcointalk user id. You can find your user id by clicking on your profile, and grabbing the numbers at the end of the URL. Copy and paste that ID into the section on the website above, and it will generate a list of where your account has been most active, along with a suggested price to sell the account for. It doesn't give away your account name, so you can easily copy and paste the token of the account here so that we can see the value of your account for sale.
I may be interested in buying the account, so please update us with a link to your account pricer info! Good luck!