As all the teams in my cup competition are 19/20, I guess I'm in level 20 cup, and therefore the prize money is:

Prelim = 1.73m
Qual = 2.59m
P/Off = 3.45m
Last 16 = 4.49m
Quarter = 5.83m
Semi = 7.58m
Final = 9.85m
Win = 2.96m

To be honest, these amounts are hardly much higher than your chart shows for level 19.