If you genuinely need a registration key to complete your lab manual assignments, here are your legitimate options:
If you are a student, explain to your professor that the lab manual requires a separate software purchase. If you are a hobbyist, consider the $40 an investment: Capitalism Lab teaches more about real-world finance than any $200 MBA textbook. And if you simply cannot pay, the demo plus YouTube walkthroughs of the lab manual can get you 80% of the educational value.