I have never ever been so confused by all the different models that seem to be available!!
TSWatches list 8 different types of 15400 Blue dials:
AU17284 - Miyota - $318
AU17104 - Miyota - $348
AP16874 - Miyota - $328
AP16156 - Miyota - $418
AP15728 - 2824 - $368
AP15585 - Miyota - $418
AP14525 - 2824 - $428
AP14307 - 2824 - $378