Once Alexa verifies your site, the site will appear on your Alexa Dashboard, and you'll be able to edit the site listing information. As at the time of publishing this post, you can still claim your site for FREE at Alexa.com without subscribing to any of the Alexa plans.
How?
Follow me through the steps below:
==> Sign up for free Alexa account or sign in with your Facebook account
==> Click on "add site"
==> Click on "check pricing"
==> Scroll down the page and click on the "claim a site" link. This should take you to http://www.alexa.com/siteowners/claim
==> Select Method 2
==> Copy the meta tag and add it to the <head> section of your homepage HTML i.e above <head>
- If Blogger blog, you will see <head> by going to "Template" > "Edit HTML"
- If Wordpress Blog, go to "Appearance" > "Editor" > Header.php
==> Once you have added the meta tag to your site html, Click "Verify my ID"
If verified, you will see "your site is successfully claimed" and "claimed" will also appear next to your blog name in your Alexa dashboard.
That's all.
NB: You don't have to enter any credit card info to claim your site for free.