- Supermicro H11SSL-N6 with an Epyc 7551P with 128G memory - €600
- PSU - €60ish
- Pile of refurb 4TiB disks - €100
- Mikrotik hAP ax² - €80
- HP Procurve 2848 - €40
- Misc gubbins - €180
There's a server, networking gear, and storage. I can sort the rest out later.
bargainhardware.co.uk is my usual source; even though I now pay import taxes, it's still often the cheapest option. (±€30/disk on my last order)