Agero! is a completely free font!! 
Author: Jung Dniel
You can use Agero! font in logos, commercials, anywhere.
You can donate via paypal. Please donate me, if you liked it. :) 
Paypal: danii93@vipmail.hu 
Thanks in advance. 
Donation amount: I don't know. 5-10$ for example. But it depends on you :)