It says it's for "channel partners", so they're probably looking to sell in bulk to resellers, maybe vendors like System76 who don't make the laptops they sell.
With enough clicking, I got to this page [1] which lists a 5-pack of the laptop elements for $674.10 - I am not an expert, but that seems like you get 5 for $674.10 and not $674.10 each. Of course, you have to add your compute element and the SSD. Am I reading this right?