I just used this site...
http://www.freeuaslicense.com
to get my FAA (commercial) Remote Pilot's License rating on my 14 CFR 61.56 Pilot's license...and it was for FREE!!!
There were three other sites...
www.freesuaslicense.com
www.freeuavlicense.com
www.freedronelicense.com
but they all redirected to http://www.freeuaslicense.com
And it was really FREE!!! (no kidding).

Cabi~