Not only this software is at a very low cost compared to most 3D softwares, it is the most fun and easy one. It has fast rendering performances for simple and even complex designs. Once you get the hang of it (a basic 3D knowledge is required) you can push it to the limits. I love the warehouse for sharing and getting models from all over the world by newbies and professionals.
In the free 2017 version, the warehouse is gone. If you want to keep the access to the warehouse, you have to download the 2015 version. Also, you should consider having your computer geared up for best performances or rendering will lack frequently, especially when using the shadow effects on complex designs.
This software is easy to use and should be considered as a great solution to all your CAD projects.
I use the Sketchup for our office new spaces and remodeling. It gives me the opportunity to create a real size mockup before the real architects do the final plans. By doing so, we save time and money by reducing the cost charges from a professional firm.