Ugh. I just had a look at the specifications. I'd been dismissing it before but this takes the cake.
http://www.idealfuture.com/#!dragonfly-specification---android-versio/c1m9v
One of the displays is detachable and a separate phone altogether. It's way too thin to fit a large battery and electronics in it (FOR A NEW STARTUP - relying on existing technology rather than a unique battery) so I don't see it having a long battery life.
They have not one but TWO 1440p LCDs, 7 inches each, that's probably $80 per display onto the BOM. But they still don't know if they will use Corning or Sapphire glass -- won't this be decided by the display choice and touchscreen technology?
The base has up to 512GB of solid state storage... that's going to be stupidly expensive to add, especially in a space-constrained smartphone platform.
Then they have two 4K@30fps capable 16MP cameras... in a smartphone. I mean I'm sure it's possible but why on earth do you need TWO? And then there are two SECONDARY 5MP cameras... because this thing is basically two phones in 1... Wait, where did the $800 go so quickly?
It's a "Phat Phablet" ... there, I said it.