I just upgraded my house setup. I swapped out my Pi systems for an old HP Proliant server. I'm virtualizing a 4 core / 16gb machine for my start9 and Umbrel servers plus upgraded the storage to a raid setup to prevent against drive failure. I'm also hosting a few other VMs I use regularly.
Server - $180+tax on ebay
4 S9 - $400
I already had plenty of SSDs around so I didn't have any costs there but even if I would have bought a few drives I could have slid under $800.
