Alexa Rank- If you have not subscribed for Alexa’s Rank Certified Alexa.com will still shows your Estimated rank by default.

Estimated rank is just a random number as Alexa.com blog mentioned: “We do not receive enough data from our sources to make rankings beyond 100,000 statistically meaningful”, in Estimated Rank doesn’t take into account the real traffic figures, so you can purchase millions of hits from any traffic source and your Estimated Rank will stay same.

So once you started purchasing any traffic(not only from us) you need to change your rank from Estimated to Certified.
Here are the steps you should take to make it:

  1. Activate Alexa to Certified at Alexa.com
  2. Install Alexa’s traffic counter on every page of your website
  3. Wait 21 days period in order to be able to switch from Estimated to Certified
  4. After the 21 days period has ended log into your Alexa account and click Manage link as in the screenshot: