Extremely rare to find as an unopened box. The cheapest on EBay goes for over $400 Cdn after shipping. I bought this one because it is the lego set with the largest buildable triceratops.
Description from Lego.com:
Years ago, dinosaurs roamed the earth and this is your chance to bring them back! This new set has enough prehistoric pieces inside to build at least 8 different dinosaurs, one at a time! Build a Triceratops, a Stegosaurus, and more. Or, build and discover your own dinosaur! Includes building instructions for all 8 dinosaurs! Triceratops measures 12 inches (30.5 cm) long!