Seems like a ripoff.
It relies on an external compute device, while costing more than many netbooks that run windows 10.
A smartphone extender is useless since the current smartphones are running ARM based operating systems, thus you do not gain much productivity.
Using it as a second display is completely stupid since it is a low end TN panel that cost more than than a 20 inch 1080p IPS monitor.
It is also more expensive than IPS based USB 3.0 powered monitors.
Furthermore, marketing it with the ability to use a device like an Intel compute stick, will only hurt their product, as for the cost of both, you can buy a laptop with a better display, faster hardware for about the same money. Getting both components will cost you over $300. If you need a laptop for a little money as possible, you are better off getting a refurbished one.
Many older gen core i5 and i7 based laptops can be found for around $200.
Overall, if they want the nexdock to be successful, they need to lower the price to around $60. For netbooks, the most expensive component is the SOC and the supporting components for it. They make up more than half the cost of the entire device, with thermal management taking up another 10-15%. Their device cuts out all of that. In a world when netbooks (intel atom and celeron based ones, selling for as little as $129 from companies like lenovo (e.g., the lenovo s21e), I do not see how they can justify such a steep price tag, especially since it is using a cheap 1366x768 TN LCD panel.