For a fair comparison, what about comparing against the cheapest "power cloud server"?
I mean Hetzner has a reputation for renting bare metal servers at the cheapest price in the market. Try AX102 which has very close performance to a M3 Max (CPU only): https://www.hetzner.com/dedicated-rootserver/matrix-ax/
While the OP's solution has a lot of advantages like being able to own the device and including GPU, but at least we do have cloud servers with comparable costs available.
I mean Hetzner has a reputation for renting bare metal servers at the cheapest price in the market. Try AX102 which has very close performance to a M3 Max (CPU only): https://www.hetzner.com/dedicated-rootserver/matrix-ax/
While the OP's solution has a lot of advantages like being able to own the device and including GPU, but at least we do have cloud servers with comparable costs available.