Well,I have a d2 that is literally 1/1... It's not worh 40k... But...
Edit, I would argue that the rarest d2 are the LE's. I have seen treks, kalaharis, G4 competition trucks including a l322, two of the wicked special 35th anniversary l322, even freaking LR special vehicles defenders over here gray market. I even owned a holland and holland p38, and a 2000 vitesse p38 that was used at Equinox and I'm pretty sure the 2000 great divide rerun, But I have only ever seen 1 LE, with the brown two tone leather seats. That is crazy.
I've seen a lot more LE's come through the dealership in Richmond than Treks or Kalahari editions. The G4's are probably the most common that I would see.
The one in Dallas didn't sell because the owner was an idiot.... I emailed them several times, text them, and I never got a single answer to any of my questions. I was fine with 6k, and had the cash in hand, but they did not want to sell it. I gave up, moved on and got two D1's instead!
If you want crazy check out LR Dallas and their 25k D1 and 40K Range Rover Vitesse in AA Yellow (I used to own one and sold it for 6K in mint condition).
Kalahari's are great, but when the roof rack is removed, or any of the special edition stuff is missing it's just another D2.