Why don't u just pay 1 BTC for the first exploit and the second u discuss with dooglus. I mean come on u run a bitcoin casino, what u care about .4 BTC for a serious bug!
ClamCoin
Exactly if you are serious about business you should be thankful to someone who contacts you regarding a bug.
No offense to crypto-games, but take a look at their bankroll, the amount strata is asking(increased,after agreeing before on 1.1btc for all the bugs), is nearly 1/30th of the total bankroll.