About 62 USD per month. I post monthly finance updates. All the costs are covered by user donations so far :)
It might be possible to do it cheaper, but I feel I got a good deal for some very high end hardware so this setup should be scalable going forward for a long time.
I mean, I can't really take credit - the users on Feddit.dk are the ones that deserve the praise. I've been very surprised at the willingness to donate. We have almost 18 months of runway and that runway has mostly only gone up as time went by. Feddit.dk is not going anywhere anytime soon :)
I think that user donations are easier when an instance has a good focus. There are some other instances I can think of where the donation model has been enough to cover things. In addition to feddit.dk and beehaw, an instance I use most of the time, ani.social, is more than covered by donations last I checked. It looks like @hitagi@ani.social even took away the donate link in the sidebar. Never mind, I am just blind. I didn't notice the little Ko-fi badge at the bottom. I was looking for a text link.
I made it a small badge so people wouldn't have to feel obligated to donate. But yes, the entire instance has been community funded already thanks to generous one-time and monthly donations!