I got a few of these puzzles and well worth this price if you’re patient enough to figure these out or at least they look nice on the desk as fidget toys. They come up on sale from time to time.
https://smile.amazon.co
This one isn’t the best of the one’s I’ve got, but added it to my collection. If you’re interested in these puzzles, I would recommend the Level 4 Marble.
https://images-na.ssl-images-amaz…L1500_.j
https://images-na.ssl-images-amaz…PDKIKX0D