Exclusively for our readers, this K'Nex Beasts Alive Stompz Building Set drops from $39.99 to $17.99 when you enter our promo code BradsStompz during checkout at KNex.com. Shipping adds $6.19 bringing your total to $24.18. We couldn't find this set for less than $39 anywhere else. It includes 356 pieces to build a stomping dinosaur. It also comes with a battery-powered motor (2AA batteries not included) and instructions for building two different models. Better yet, there is no sales tax (except PA).