This is similar to exchanges fee charges, in any trade win/loss there's a fee attracted to it, it's no difference in that regard.
And I think it's for $100 and above, although actually more than the fee most exchanges charges (if not all). Maybe because this is a predicting game...
First time reading about it, i was surprised seeing trading options in a casino.
Interesting feature that we don't find in other casinos. However, i wonder why there is no mention of it in the homepage or other official channels. Seems like only few users noticed it while many others may think it's a trading option.
It will be crowded too. I mean, if such interesting features are not found in other casinos, then rollbit does provide convenience to its users.
I also just found out about this feature and most probably if trading only focuses on the exchange they usually use.
I opened on twitter or x.com rollbit also no discussion or tweets about this feature.