"Holding XBM token grants user a possibility to bet without any house commissions"
As far as i know it is possible just having a huuuuge sum of your tokens.
Pfff, friend, they have wrote the formula that can help you to reduce your house commissions. Of course, u will never find the batting house which will do everything for free
some even take more that 15% of commisions, you know? it can be lower, but the fact is still exist ^^