That's my same reaction to this. I mean, it's $300, which can get you a lot of other high quality, proven headphones. I'm sure they will be good if they're a full sized open planar magnetic can, but I want to at least get some reviews and impressions before I would buy a pair. There is legit like no reviews on these from anyone.
I think the nice thing is they offer the money back option for whatever reason, so people pulling the trigger don't have much to lose.
I'm hoping they will be awesome too, just like everyone else, however let's wait and see and get an idea of their sound signature first before throwing money at it.