Well, understand that they are a custom made garment, but even including that, I think they are way overpriced. Just my opinion though. But they do seem to stick to their time tables and deliver the product as promised with good communication.
Indy Magnoli may have done a version of this coat, and if not, I'm sure he'd at least discuss the possiblity with you, though I wouldn't even begin to consider how his price would compare with Abbyshot.