Well yeah I never played for the jackpot since it was costly.
Maybe luck isn't on me, I never win the big prize for gambling. In freebitcoin.in, I've tried some game and nothing give me a good result, so sometimes I move to another gambling site which have given me a bit of luck such as in blackjack game. I only get 7 satoshi when I tried free roll but I still do it when I want, and today the site give 2x reward point.