I think what he meant about the $200 jackpot was to roll the number 10000 in the free roll every hour, I have been using Freebitco.in for almost 2 years now, but I also doesn't have the luck to roll that dream number 10000 in the free roll yet 
I have also been on this site for almost a year and a half and I have not been able to win a large sum there. I do not even believe that it's possible. I have no luck there
we are just the same. been using them for more than 2 years already but i havent even got my luck on that lucky roll. guess im not lucky too. or maybe, it is impossible to hit that number due to higher house edge of the site.