I posted long explanation with my math on FB (last person on earth writing there), but I will try to go with TLDR.
EV of the ticket is 1 mill, but high variance - let's lower variance with lower EV. Your personal utility curve and mix of current/future net worth are important.
For Christmas you received "The Golden Ticket". You can use it in a casino and they will let you roll a six-sided die once.
If you roll 6, you will receive 6 000 000 dollars. Otherwise nothing.
What is the LOWEST price that YOU would be willing to sell your golden ticket for?