Exactly what basis do you have for this? You aren't AA --- only RM knows whether or not fares should exist. This is a perfectly valid fare and this fare has existed for A LONG TIME. Who knows what RMs intentions are, but they seem to clearly want to sell at this price level... otherwise they would have pulled the fare by now. Mind you, the $400 price level has come back several times as well.

People calling things "error fares" and such is what led to the recent DOT decisions in the first place... If you call it an "error fare" you give AA the license to rescind the fare since you are apparently knowingly exploiting it...