Yea, I emailed the seller to ask for the measurement from the top of the neck to the top button, and also asked how the shoulder padding is. I think the button stance may appear lower in the image because of how the jacket is hanging, but I'll find out for sure when they get back to me. The description made it sound like they are very willing to communicate and take extra measurements.
It's good the seller is willing to take the measurments. I sell frequently on ebay, and always respond to emails as a seller, and am happy to take extra measurments/photos for the bidders. However, the thing that really gets me as a buyer is when the seller doesn't have the courtesy to respond to emails, or even worse, "doesn't have the time" to take additional measurments. I've passed up some good deals from sellers based solely on their rudeness to my emails. Looking at the picture again, I think you're right about the stance having to do with how the jacket is hanging.