Do you think the bonus amount depends on how much is wagered? Because I see the bonuses that some users get are different and I only get less than $20.

The amount basically or could be like pre/post monthly based your rank.
In post/pre monthly there has some threshoold waggering to meet the maximum amount you can get based your rank. But, since these bonus is came from promotion could be is based on your rank.
Each rank having different maximum amount.
I received this bonus recently and I compared it to user that has higher rank to me but less wager and I received higher bonus award than my friend.
The formula on this bonus is different imo and probably wager is the main factor considered rather than the rank since this is just a subscription bonus not a bonus related to VIP.
It’s just a speculation since Stake bonus computation never revealed. So I enjoy whatever bonus comes to me.
