I have to say that for a relatively new Bitcoin gambling site, the design looks awesome and very clean.
But has someone already verified that the website is really provably fair, don't know enough about that myself to do it.
It's not extremely hard to understand. Anyway, the game is provably fair in the sense that the house can't modify the % ticket that won, but the way the game is set up makes it easy for the house to cheat. The house knows the % ticket that wins, so they could simply keep buying tickets till one of their tickets falls into the % range. Since there is a limit, he could easily make multiple accounts and cause him to win. While I don't think RoadToRichness would do this, there is a possibility of him cheating.