Today only Brookstone.com lowers the Tranquil Moments Sleep Sound Therapy System from $129.95 to $89.95 via code BRADS1. Even better shipping is free. This is the lowest price we've ever seen on this sleep sound therapy system. This device plays sounds that are conducive to relaxation and falling asleep based on research by the Center of Neuroacoustic Research. The 261 reviews give it a 4.3-star rating. Sales tax is charged in most states.