I got a refurbished J4105 8GB RAM thin client for 40€, 2 m.2 SSD slots (though one required an adapter, and only that one is NVMe, so lets add another $15 for the adapter), passively cooled.

The case doesn’t look as nice, but still over 100€ difference for a slightly faster, slightly newer CPU. And while not officially, it does support 16 GB RAM if I ever decide to upgrade. It does not have GBe ports, so that is probably the biggest reason to go with this board instead, besides wanting the sleek case.

edit: It’s the Futro S740