In case anyone of you is interested, it seams that google is offering a free license for google earth pro (NOT THE FREE VERSION).
All one has to do is go to this link https://geoauth.google.com/gev0/free_trial.html
Fill in the details (put any company name and any phone number) and you will get an email with the logging detail and license code.
I have to admit, when I tried to use my gmail account it gave me an error msg but when I used my private/business email address, I got a license within 1 min.
You can see more detail and discussions on other people's experience here