The price of $15k according their YouTube video is ridiculously low. Decent robot arm costs you $5k alone. Not sure how they will plan to make some profit even buying parts in bulk.
$5k is on the low end. The demo kitchen they did was with 2 UR5 robots, list price somewhere around $20k each. They put 2 5 finger hands on the end, which probably cost at least the same again each. I'd bet you'd be getting well towards $75k (or maybe even significantly more) just buying the components.
