As the tittle says, how much this site worth?

Link:

http://tumblrgamous.org/

Google Page Rank: 2

Page 2 on Google and page 1 on bing and yahoo for the main keyword: "how to get more followers on tumblr"

Thanks!

Any kind of income?

Based on the information provided - in the vicinity of $8.50.

Now if there's any revenue or even traffic, this number can change considerably.

Any amount of income if monetized or amount of traffic and traffic sources

It has a google analytic, I can share it to you if you want to see the traffic stats. Most of the traffic are coming from search engines.