This man was asking for loans and now he's gambling, great life making decisions right there heh. On the topic of fees though, it's been widely known how insane the fees of BTH are, especially if you were going to only transact a small amount. I'm pretty sure it's close to common sense to anyone that gambles in crypto casinos that BTC is NOT the coin to use. There are many other casinos out there that accept other coins such as XRP, TRON, etc., that have lighter fees compared to Bitcoin.
And didn't you see the transaction fee before they confirmed the transaction? Why'd you go and proceed if you knew the fee was that high?
Good point! Before the transaction will take place it will ask if you want to proceed and if you are accepting the fees that being applied, it's you to decide and like you have said, it's common sense that every gambler knows about it and if they continue it means that the fees are just fine for them.
Else, there are available alternatives, alts that are aslo accepted to gambling site which more lesser fees than Bitcoin, as gambler you are in-charge with every decision you take.