When Jonah Seidenberg found out about Nike Minds, a futuristic-looking sneaker that claims to improve concentration by stimulating the soles of the feet, he had to have them.
On a recent Saturday, the 12-year-old from the Chicago suburb of Northbrook and his mother searched StockX, an online sneaker marketplace, and other sites looking for a discount but struck out. They eventually found the last available pair in his size on Dick's Sporting Goods' website, but for the full price of $145. They grabbed it anyway.
