If that helps I just got a Aoostar WTR Pro (Ryzen version) to replace my NAS. But I had 2x 16GB RAM left so that was pretty cheap for a rather powerful home NAS. With 8c/16T abf two 2.5Gb NIC it’s powerful enough to replace a small hypervisor.

BUT careful, while it has quickswap slots the hardware itself doesn’t support it.

My Domain registrar has a reverse DNS service included.

Honestly, when it comes to your specified amount of Cores & RAM you’ll have tough luck. Got myself a MiniPC with 5700U and 32GB of RAM, two 1TB SSDs (mirrored) and 3 NIC but that was still 500€ after waiting for a decent deal.

Even buying a used PC off eBay will most likely cost far more if you insist on your specs.