To be honest, this is unnecessary as it is fraud and condemned in its totality. Who will buy a domain for 100 years? that is 10 decades and not many companies survive up to that. No reasonable person be it an individual or organization will want to enter into such an ambiguous contract that is not beneficial to the buyer. Besides, even a VPS user would not spend up to $30k in 100 years considering the next 100 years of inflation that may arise so the amount and cost are unnecessary.