A: Yes! Boson offers 20-30% discounts during major US holidays (Memorial Day, 4th of July, Black Friday). If you plan ahead, you can buy the test for ~$70. Sign up for their newsletter.
Even in the free demo, you can experience the core functionalities of the ExSim-Max environment: Study Mode : Provides immediate feedback and detailed explanations boson exsim tests free
Some bootcamp instructors (like those on Kaplan or Infosec Institute) include limited Boson tests in their $4000 courses. If you are enrolled, you have free access. Outside of that, no. A: Yes