Because it’s the casino giving you free cash in this instance, these bonuses aren’t going to be in the four digits. You’d be hard-pressed to find a casino offering three-digit withdrawal bonuses.
As far as any specific gambling locations that have the best of this type of bonus, it’s hard to say. These bonuses normally are hidden in loyalty programs or are offered to players who haven’t been at the casino in a long time.
That being said, you might want to be checking out 888 Casino who does use this particular bonus as part of their welcoming package.