Think Fun Gravity Maze

Amazon has the Gravity Maze Marked down to $14.99 was $29.99!

Falling Marble Logic Game
A marble run and logic puzzle all in one. Age: 8 and Up
60 challenges ranging from beginner to expert
Builds spatial reasoning and planning skills
Includes 1 game grid, 60 challenge cards, 9 towers, 1 target piece, 3 marbles