I just noticed that people were selling their bitcointalk account here
And I am wondering how much mine would be worth
It is almost 10 years old !
Selling bitcoin accounts on bitcoin forums is strictly prohibited. Those who buy and sell accounts here cannot survive in the forum. Here's why you should be wondering how much your account is worth. So will you sell your account or have you purchased your account from someone else? According to your language, your question is like this. I would say the value of your account lies with you. Moreover, your account is worth zero to anyone else.