Sigma 56mm f/1.4 prime lens for Sony E, Panasonic MFT, Leica L, Fuji X, Canon EF-M $379

Probably a price mistake, estimated shipping in November for the Sony and Leica mounts:
https://www.adorama.com/sg5614soe.html
I think Adorama meant to only discount by -$50 to match everybody else right now (mainly, B&H) but then they stack a redundant -$50 automatically at checkout for all these mounts (and even better, -$79 for the Micro Four Thirds mount).