I've only ever had three boosts. The highest paying one earned around $75± over a couple of months before it mostly stopped earning. That boost was in the first month the program was launched. One of the other two earned $15± over a couple of months. The third only about $6 (yes, six dollars). Those last two were in August and September respectively.
So… yeah. I'm not overly hyped about the boosts. I earned $150± last month in partner earnings. I became an FOM at the start of January; however, I'm on track to earn (I stand at $66± so far) less than last month.
I'm hopeful this will improve over a couple of months. This month, I've been hit by a lot of clap jumpers. Those are people who clap on numerous of your posts in just a couple of minutes, meaning they could not possibly have read said posts. For example, someone clapped a half dozen of my recent posts in less than two minutes. Now, all of my posts are over three minutes in length; a couple of those posts were seven to nine minutes or so.
It's a scam. They mean to lure your engagement as an FOM to take advantage. It's cheating you and real readers.