Low production needs a denominator
CJ-8 production can be discussed as a run total; a rare color-and-option combination needs evidence that actually counts that combination.
Prototype rarity is not trim rarity
One-off or experimental Jungle Jeeps belong in a different evidence class from regular-production halo models.
Auction records are observations
A sale result preserves a dated transaction and its claimed provenance; it is not a timeless market value.