Thumb Score: +8 Sale Price: $47.95 + use Coupon Code: C4K2O9PF to get $5 off = $42.95 This set includes 152 pieces including 50 Marbles! This Marble Run stimulates creativity and reasoning, both which are required to build impressive-looking structures with the correct angles of inclination. Ages 4 years and up. http://www.amazon.com/gp/product/B00LAFSZEW