I have spent a bunch of time today looking for this discontinued Brainstring R puzzle. Wondering if there might be sites selling a used one? Tried EBay, Etsy, Amazon. Posting here to
Amazon.com: Recent Toys 5007 Brainstring Original Puzzle (assorted Colours) : Toys & Games
Amazon.com: Brainstring Advanced Brainteaser Puzzle – 3D Block Puzzle : Toys & Games
Brainstring Advanced: Unknot the puzzle without tying your brain in knots
Amazon.com: Brainstring Advanced Brainteaser Puzzle – 3D Block Puzzle : Toys & Games
Brainstring R puzzle node
Brainstring Value Pack Puzzle (Includes The Brainstring Original, Brainstring Advanced, and Brainstring R) : Amazon.com.au: Toys & Games
Brainstring Original Retro logikai játék - Recent Toys - eMAG.hu