American First/Business Class mistake fare to Miami

Looks like a mistake in the loading of a First Class fare for American Airlines flights between Calgary and Miami. Total price with all taxes in is about $712 (regular price can be as high as $4000) There seems to be tons of availabilty but you want to try to route through Dallas as the MD-80 on the YYC-DFW leg has business class and if you can, try to get the 777 between DFW and MIA for First Class. Avoid routing through Chicago as the YYC-ORD flight has no business or first class. This offer may die at anytime so take advantage soon. Also looks like it needs 21 day advance purchase.

Bookable on AA.com or Expedia.ca

Thanks to why fly on Canflyer for the heads up