Price is speculation. Maybe some guesses will be right, maybe not - we'll see. I wouldn't get caught up on it until it is official.
Regarding all in one. Glass half full, empty. There is already a Trident installation base. If they created an all in one that leaves that population out. Making it an add on and option makes sense as some may not care about their phosphate numbers. You can choose which set you want. Traditional, N&P, or both. Up to the hobbyist as both work independently.
I understand the space concern. Valid. Kamore and Maven on the surface present a neat container. That is until you look at the reagent lines and bottles. Then you have a potential mess on your hands. Cable management is always done with good intentions.
There is a lot of hoopla around these automation testers. Just need to weed through the noise, bias, market speak, and made a decision if it is right for you. Whatever that choice is.