A kilogram of rhino horn is worth up to 65 thousand dollars US. There are a lot of interesting wildlife trafficking facts that you can find on
havoscope
Rhino horns aside a liter of snake venom at 230 thousand and a fish bladder at 12-15 thousand each and the most shocking for me; a pound of a black bear's bile for 200 thousand dollars.
thats a black bear in a tiny cage with an incision somewhere on his belly where a tube collects the bile (some sort of liver fluid) these bears eventually die inside the cage :(