Neuvana's stress-reducing earbuds are available to pre-order for $399
 

Neuvana's calming earbuds are nearly here after a long, long development process, although you may be in for a few surprises. The company has started taking pre-orders for its nerve-stimulating Xen buds at a $399 price ahead of their winter release....

https://www.engadget.com/2019/10/15/...uds-pre-order/