There is at last report an £18m prize fund, not sure if that includes the TV deal with China. 2nd place will bag over 9% of that 18m.
For us (2nd) to get little more than 100k would mean all commercial revenue would be less than 2m. The China deal alone is £2m. Then you add Sky, BT, BBC, SEGA, EA Sports, Irn Bru and all other commercial deals we get a lot more than £100k.