It turns out at the same time that American is also ordering 15 Embraer E175 76 seat regional jets. That’s on top of the 10 of these planes they ordered in the fall. So American remains committed to two separate fleets of 76 seat regional jets.
American Airlines EMB-175 Operated by Republic
Currently Envoy Air (formerly American Eagle), Republic, and Compass all operate Embraer 175s on behalf of American.
With a list price of $705 million for these aircraft it’s a closer guess that American is paying half of that.
American Airlines EMB-175 Operated By Republic in Miami
(HT: DN in the comments)