It's about $40/month, but it's my personal server for everything else too. Hosts some web radio projects with liquidsoap and icecast, some generative audio experiments, and so on. It's still probably more server than I need.
Edit: remembered that wrong. It's $66/month. But I'm using an instance much larger than you'd need to just run jitsi.
You can get so much mileage from a $40 hetzner instance. Mine is doing all forms of useful things. My only critique is that latency to storage boxes is awful (and storage is otherwise really pricey).
Edit: remembered that wrong. It's $66/month. But I'm using an instance much larger than you'd need to just run jitsi.