Go to the promotion and see the detail "More Info"

Each persentase bonus has a different turnover, also you have maximum amount bonus you can withdraw. Example on my country using "IDR" the maximum we can get from 100% Bonus Welcome (Rp.1,000,000) around 70$ with 18x-20x turnover (Depends on the product & provider as well).

My suggestion, it's better ask with "LIVE-CHAT" to avoid a mistake information from a user on here.