First of all, I will make sure the site is old and legit.
$50 welcome bonus is good for me. But there are some that gives 100% bonus of up to 1 btc. That is good enough as well, I can deposit 0.002 btc to receive 0.004 btc.
Nobody will even believe you about that hundred percent up to 1 BTC welcome bonus.
That's hilarious dude.
No one, or no casinos will ever give that huge amount just for welcome bonus.
Maybe that was just a bait? Correct me if I am wrong, but I believe that "casino" is a scam.
Seems that you are not familiar with online casinos. 100% deposit bonus or welcome bonus is a common thing, most all online casinos offers this bonus.
Dont think that welcome bonus is a free money, there is always some conditions behind the bonus.
Most of them comes with wagering requirement, means that you cant withdraw your money (deposit+bonus) till you meet the wagering requirement.
Just for your information, there are even some sites offer up to 200-300% deposit bonus.
The higher the bonus you get, the higher amount you need to wager before you can request a withdrawal.