A Tyrannosaurus rex tooth of this size will sell for about $500.00 to $700.00. Tyrannosaurus rex tooth Quantity in Basket: None Code: MIS-220 Price: $16.00 Shipping Weight: 0.08 pounds Quantity: Time: Creataceous, 68 million years ago Location: Hellcreek Formation, South Dakota, USA Dimensions: 3"