I’d wager some Trimix that is just the introductory price
It could also be the difference between direct to consumer vs reseller. I got the Choptima price off of Paragon, which is adds another markup than if Dive Rite sold direct.
Another point of comparison the FX-CCR is $7,900 similarly configured (NERD no HUD DSV and sensors) and $8,200 with SW HUD.
Dive Rite probably has the economics of scale as the Choptima shares components with their BM unit and they make their own regs.