Today Nickelodeon put this out on Twitter as a brief introduction to the world and format of TCM.
EVERYTHING you need to know about The Crystal Maze 🔮Premiering Jan 24! pic.twitter.com/8WCI5rgKjN— Nickelodeon (@Nickelodeon) January 12, 2020
We knew it would be a $25k top prize rather than the underwhelming rewards that are part and parcel of the UK show but the video explains how this prize is earned. Every gold token is worth $100 (that's some pricey Mylar), and we can assume silvers are -$100, so a minus score should mean they go home with nothing. Also, whilst the current UK rules mean you get nothing scoring 49 or less, I'd assume that even a gold total of +1 we still see them get $100.