63-Piece Gecko Run Marble Run Starter Set by Thames & Kosmos $11.52

Amazon has 63-Piece Gecko Run Marble Run Starter Set by Thames & Kosmos on sale for $11.52. Shipping is free with Prime or on $35+ orders. Details: Innovative: Design your own vertical marble runs with this specially designed system of flexible tracks that does not require any support structures, allowing you to build higher with fewer pieces.