11 Years old Domain? Whats the special of it

Hi, Im going to buy 2, 11 Years old domains. both are .com domains. one domain have a dash. what price should i go best. and whats the important of 11 years old domain.

 

It's important because aged domains helps you when it comes to SERPS

Read more about it here:
http://www.webconfs.com/age-of-domain-and-serps-article-6.php

There are other factors that'll effect the price of the domain such as it's PR and actual domain name

 

Wow Greate info, +Rep Added.
But how much should i spend for it? about 50$ or over that?

 

$50 is really cheap for an aged domain imo especially of that age!!! It should go for hundreds. What is the domain's PR?

 

domain without "-" is pr2, 6 letter & with "-" PR1