Figure 2. Empirical Examples of Activities where the Price of Species Is Related to Rarity or Perceived Rarity.

(A) Prices of collectible butterflies in Papua New Guinea (modified from [9]).

(B) Hunting trophy prices of 57 Caprinae taxa.

(C) Selling prices of exotic pet species according to CITES status. Species that have a CITES status (open squares) are more expensive than species with no CITES status (solid squares).

Prices were standardized by dividing by (A) male wingspan, (B) trophy size, and (C) adult weight (see text for details).

Vertical bars: standard error; sample size in parentheses.