There are a lot of people here VASTLY underestimating the unimaginable events they would need to endure for this challenge.
You arn't merely surviving two weeks of torture, you are surviving "two weeks" of non stop endless agony to such a degree you cannot fathom it.
That "two weeks" could easily end up as decades in a time loop, with every aspect of your body and mind being constantly tortured and destroyed, then rebuilt to be tortured and destroyed again.
You would wish for death within minutes, if you had the ability to kill yourself and cancel the challenge, you immediately would, but they wont let you.
When you finally return to earth one of two things will happen. #1 You will IMMEDIATELY kill yourself to free yourself of the experience of what has happened to you. #2 Your mind is fundamentally destroyed and you cannot function as a human being, and effectively end up in a hospital staring blankly at a wall or screaming constantly for the rest of your life.
Either way, you arn't seeing the money.