still waiting for an answer...
Hi Luptin - An answer on what specifically? Feel free to contact us at admin[at]bitcoinrush.io, we'll be happy to help you out!
I think it would make more sense to answer Luptins questions publicly. I'm sure I am not the only one interested in how BitcoinRush handles this situation.
So you understand "on what specifically"? Great, so should they...
tl;dr: Anything on the last page that's unanswered yet.
It is not a flat fee, it seems to be 2% of your bet. I can't find where they say this though
All I found was this:
While there is no house-edge, the site takes 1% of the pot for commission purposes.
Technically, it might not be house edge, since you're playing against another player and not the house,
in its function however, it does just the same.
If it was 2% though, there's something wrong, as the "commision" is stated as 1%.
Your zero house edge games makes your site worth investigating I be sure to try out your games once I get a good amount of mbtc unless of course there's some free to try

Zero house edge doesn't necessarily mean neutral EV,
the house seems to take 2% as "fees" same as 1% house edge of most sites.
Anyway you can prove this? I don't want to play a game just to see if they take 2% while the rules say they "only" take 1%.