Amazon: K’NEX Roller Coaster Building Set Only $20.65
Amazon has the K’NEX Education ‒ STEM Explorations: Roller Coaster Building Set – 500 Pieces – Ages 8+ Construction Education Toy marked down to only $20.65!
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Note: The price is accurate as of the time of posting, but Amazon’s prices are always changing, so make sure to check the price shown on Amazon when you are checking out, as that will be the price you are charged!