In case anyone is wondering why someone would pay so much to control their bed temp - I have a similar product the "Chillipad". Essentially I'm a furnace when I sleep and wake up covered in sweet. This thing keeping my bed cool was the biggest single thing I've done to improve sleep quality. Its not quite as stupid as Eight Sleep in terms of initial cost and there's no ongoing subscription but it was still expensive. I've also had to open it up and replace a faulty check valve, and it occasionally floods so I have it sitting in a tray. But damn... it works.

However now I want to try this aquarium chiller...