Check out our product, it's a far-cry from the $400 you mentioned but many times less expensive and thinner than coelux.
Check out a video here:
Some comparisons with Coelux: https://bit.ly/2YszzsO
We have done 7 years of research on this and just recently brought "Virtual Sun" to the market.
If you want to replicate a window, there is more than just lumens, CCT, and CRI. In order for your brain to really believe something is a window or a skylight, you also need:
1. Separate sun and sk... (read more)