List of previous similar products:
Status Release Price
----------- --------- ------------
AirDog* Pre-Order Q3 2015 $1,295
HEXO+* Pre-Order Sept 2015 $1,299
IRIS+* Available Now $750
Mind4* Kickstarter Failed $900-$1,489
Lily Pre-Order Feb 2016 $519-$1,019
*Note that all but Lily require a $300 GoPro camera.
EDIT: Found Lily release date...
The price just seems unbelievably low compared to all the other options.
In any case, I don't believe that's the entire cost of the unit, I think that's just 'put x dollars down to be put on the preorder list' and you just might have to pay the full amount later.