You jinxed it! I was able to get one on eBay (minus the wifi kit). I've been more interested in Lenovo "Tiny" systems (M715Q) lately. The build quality is good, they're cheap (at least the 2000/3000 series ones), and they're a bit smaller than the Deskmini.
Only limitations so far are limited RAM timing/XMP options (I guess this is a big one) and 35W TDP only.