Target has the Ravensburger Gravitrax Obstacle Course STEM Set for $120 in cart - 25% off with this Target Circle Coupon [Exp 11/21; one-time use] = $90 with free shipping. RedCard holders (sign up) get an additional 5% off in cart. Includes GraviTrax Starter Set plus 5 additional expansions including the Trampoline, Transfer, Spiral, Zipline and Bridges.

Check out the thousands of good reviews for this similar Gravitrax set on Amazon.