Thats a lot of money. I just bought a HP elitedesk g3 800 midtower for €82, incl psu but without cpu, from a local refurb site. Slightly dented but bios updated to this years version and cleaned… From ebay a €45 i5-7400 for 4c/4t as it can decode hevc 10bit for jellyfin. 32gig ram from ebay. 4 amazon SSDs I mounted in an icydock chassis that slots into the 5.25 bay. This is the expensive part, but its really clean and drives are ejectable like a rackserver. The chassis can hold 2 HDD for an additional zpool as well as an extra ssd. Also has an nvme slot for Proxmox OS and plenty of usb for Truenas style setups.