The size of the bonuses offered by online casinos can vary greatly. Some casinos offer larger bonuses than others, but it is important to keep in mind that the size of the bonus is not the only factor to consider.
It's important to check the terms and conditions of the bonus, such as the wagering requirements, eligible games and the expiration date, before claiming it. A bonus with a high value but with strict terms and conditions may not be as beneficial as a lower value bonus with more favorable terms.
Some online casinos may offer very large welcome bonuses, but these are typically spread out over the first few deposits and have high wagering requirements. Other casinos may offer smaller bonuses, but with lower wagering requirements and more favorable terms.