A copy of this thread but with a bigger prize.
Cost to enter: 250k, if you have lower than 3mil points 100k.
1st guess: 5mil
2nd guess: 500k
3rd guess: 250k
4th or lower: 1 point
Answers by PM only...
Why? Because you'll never guess. :)
EDIT: Ugh! Forgot to remove "Display Age and Date of Birth". It's gone now, but anyway..