Walmart offers the Mattel MindFlex Mental Acuity Game for $54.54. Shipping adds $4.97, or opt for free Site-to-Store. Even with shipping, that's $3 under our June mention and the lowest total price we could find by $3. Sales tax is added where applicable. This game features a headset that measures your brainwave activity, so you can raise and lower a small foam ball by focusing your concentration.
Mattel Mindflex Duel Game - T8498, a similar product, is available at these stores