It's paid annually $21mm a year to open sats + more to other places.
You can average it to about $1mm a month. Folks could deny this, or that it makes a big impact on nostr. But that is not a serious argument.
Discussion
This doesn't seem correct. $5M in 2023. $5M in 2024. $10M in total since may 2023. Over 18 months. That would be $555K a month on average. But that would be if it's all spent as of today. We know that's not the case though since grants are paid out over the course of a year or several years in some cases. It's far, far less, IMO.