Huh. I need to stay from late-night eBay. Apparently I have a 2.2 kW single-phase MX2 (possibly with Ethercat?) on the way, for about what I'd expect to pay for shipping on a new one. The picture shows the Ethercat module but the text is ambiguous.
Mind you, my test hardware is all 120V, and I don't own a spindle to connect to it. Which means that it'll need to live near my CNC for now, and I'll need to pick up the cheapest possible spindle for development work. The low end of spindles on Amazon is amazingly low, especially if I'm not planning on actually milling with it. Then I'll pick up something nice with ATC once I'm really ready to use it later this year.