MSRP was $60.  Choose to purchase just the Balance Board for $19 or add in the accessories to create a swing for a total of $30 (accessories include rope & caribiner).
 
Wooden Wobble Balance Board & Swing - 2-in-1 design for endless fun. Balance board mode supports muscle development and correct posture. Swing mode offers stability and wide range of motion. Made of high quality natural wood. Easy installation with included accessories. Supports up to 485 lbs.
 
Easy to turn into a swing with the rope and accessories - hang from a tree, purchase a swing stand, or utilize a beam.
 
Highly reviewed on Amazon where it is now sold out.  Link below.
 
https://www.amazon.com/Real-Wow-Balance-Swing/dp/B08KSNXV5B#customerReviews