I don't know why you would buy one, even if it were available, unless power-efficiency was a crucial component for a server. Can you imagine what you could get, on eBay, in a small form factor, for $600?

I made off with a i3-8100T (about 3/4s as powerful, 35W TDP), with 16GB of RAM, and a 256GB SSD in an ultra-small-form-factor case for less than $150. For $600, it makes absolutely no sense against anything used. Let's say it drew 50W vs 20W total use at 10 cents per KWh. It would take 5 years to save $130, if you ran it 24/7/365. A $450 used Intel small-form-factor system would run circles around it in performance (especially after any emulation / code conversion) and you'd break even.