all this because you mentioned AEV lol
my original thought on the price was damn!! but then I looked at what was included, it appears to be 100% bolt on, no cutting, welding.
$2000 over an AEV kit? well, let's do some math ... I looked for the most complete JL high steer kit available (without having to piece meal it together), Rock Jock $1900, that doesn't address the ass end which will need to be addressed to get a good ride (oh yeah, I lobbed a softball there).
As you mentioned in the video, to get that smooth of a ride would likely be a change to long arms; long arm kits for a 2-door start around $5k then add in the install costs if you are not a good welder etc...
I had the AEV Dualsport RT on my JLU before the longarms, it was a decent ride, but it was all the changes I was planning that made me make the leap into a longarm suspension as it was cheaper in the long run at the time.
Next time mention Teraflex or Metal cloak, those guys get ramped up faster