I just wanted to point out on the prep part and American families.

The time invested in prep for a device like this is hardly different that prepping a meal and throwing it in a crock pot before work. Crock pots are fantastically popular cooking devices found in almost every American's (middle america especially) kitchen and used on a regular basis.

Personally I have no experience with sous-vide nor am I very familiar to it. Watching he video I was intrigued but a little confused at what and how I could use a sous-vide cooker.

However connecting it and the process of using it to the very familiar crock pot I use at home instantly helped me to recognize the potential use of a device like this.