If I remember correctly, they brew and freeze the coffee quickly with liquid nitrogen to keep everything incredibly fresh. I believe James Hoffman took a tour of their facility and has a good video on what makes them different. I was a subscriber for a bit, but it personally is bit more expensive if you do have the equipment and the time.

Why freeze it? It needs a few days to off gas after roasting.

Cometeer is much, much better than any home brewed coffee I've ever made (I've used drip machines, pour overs, french presses, fancy grinders, hand crank grinders, etc.). Will it beat a cup of coffee from a local fancy brewer? Probably not. But I can confidently say that their variety ranges from decent to really freaking good (e.g. Onyx Southern Weather, George Howell Alchemy, to name a couple of favorites).