Cackle Hatchery just started carrying Black Ameraucanas that are reasonably priced, however, they are only offered as Straight Run.
They're using the Ameraucana breeder flock crossed with Welsummer and Marans (not sure the coloring) to create Olive Eggers. These are also sold as Straight Run.
The EEs from Cackle are top notch, though! Full muffs/beards, slate or blue legs, great color variety, good lay rate, blue/green eggs. They aren't Ameraucanas, but they aren't marketed as such either, so that's good!