A DIY License for SimTools is meant to be FREE for the DIY builder interested in designing and building their own homemade motion simulator. You can find out more about acquiring a free DIY License for SimTools here on the official XSimulator.net forums.
XSimulator - Request a DIY License
The SimTools “DIY Edition” License is for personal non-commercial use by the Do It Yourself (DIY) simulator builder, provided that the DIY simulator the SimTools “DIY Edition” is used in conjunction with is not a commercial product, or built from a kit. In the event the DIY simulator is sold then the new user is required to purchase a SimTools DIY or Professional License. (If sold with a PC, the SimTools DIY Edition must not be included.)
The DIY Edition is not intended to be loaded on a simulator that cost money to ride. The Entertainment Edition is available for that.
The DIY Edition is not intended to be loaded on a simulator that is to be sold. The Professional Edition is available for that.
SimTools only comes with the game plugin Live for Speed. Other game plugins are available at Xsimulator.net.