This is the marble run: Hape Quadrilla Cyclone.
And here’s how much it costs. Which is to say Amazon will sell this set to you for something between $90-something and $190-something.
Here’s one way to set it up:
The Wall Street Journal approves, anyway.
Here’s the Cyclone set in action:
And here’s a mish-mash of two other sets:
Oh, made in China, natch.
IDK, read the comments section in Amazon for a few minutes and then You Make The Call.
I myself paid on the low end of Amazon’s absurdly wide pricing range, so I’m not complaining…