http://www.knex.com/20thanniversary/Mission20on20/
The 20 winners will each receive one (1) K’NEX MarioKart Wii Mario and Standard Kart Building Set ($15.99 approximate retail value), a Toad and Standard Kart Building Set ($15.99 approximate retail value), and a Donkey Kong and Standard Kart Building Set ($15.99 approximate retail value), for a total approximate retail value of $47.97