one million dollars
The luckiest number to choose on the tv show "Deal or No Deal" is whichever number you consider to be your luckiest number.
Go on deal or no deal website and register.
It is quite hard to get on the UK version, I am not sure about the U.S. I have registered on the channel 4 website however I am not sure how long it will take.
By the money they've lost in boxes