In LikeMania, it's impossible to achieve stable boosting, even when using the same settings. For example, in one case, the deductions can be 20-30%, while in another, they can be 80%. Meanwhile, the number of boosted bots in the same VK group remains the same. The situation with boosting offers is better, but for that kind of money, it's easier to order directly from a service. As for boosting for Instagram, the situation is more positive here. I haven't checked other platforms.