Staples currently has the 640 piece K’NEX Typhoon Frenzy Roller Coaster Building Set priced at only $19.99 This is the best price we could find anywhere! You can choose in-store pickup to avoid shipping charges! This set makes a great gift for kids over 9 years old!
K’nex Typhoon Frenzy Roller Coaster Building Set contains more than 640 durable plastic pieces. It features a 2 AA batteries operated motor for mechanical movements and is suitable for children who are 9 years and above