Many gambling sites have deposit bonuses.
However, if you receive the deposit bonus, there is a condition for withdrawal.
For example, 10 times the deposit amount, etc.
What is the reasonable condition you think?
10 times of the deposit amount is really high. And withdrawal conditions should be linked to the bonus given, not deposit amount. 100%-200% of a bonus given should be quite fair condition. If it is more it looks like a trap from a start. But of course you need to read terms and conditions before making any decision.