I've honestly no idea if it will be a hit or not, though I guess it depends upon what they define as a hit. iPhone or iPad numbers won't happen.
For me personally, watches are fashion > function, so I don't have much use for this. Price is not a concern, watches are crazy expensive anyways.
Yeah, I doubt price is much of a concern for true watch aficionados, although obviously that's not the target market. I've got a Tag that I spent a nice chunk of change on, but obviously old fashioned luxury watches like that are much different compared to smart watches.