“Google has made Google Earth Pro, the paid-for version of its global 3D mapping system, free to use. Subscriptions to the Pro version used to cost $399 per year.
What do you get in the Pro version?
Many people will be familiar with the existing free edition of Google Earth, which enables users to view satellite images of the world, supplemented with 3D buildings and trees in many major cities.
The Pro version doesn’t differ radically, but it does enable you to supplement the standard data set by importing GIS data, and includes basic measurement tools (shown in the video above).
It also allows users to print off higher-resolution images than the old free version (although the base satellite data it uses is identical) and to generate custom flythrough movies.” – Jim Thacker | CG Channel