I love the idea, and it's just the kind of thing I'm paranoid enough to own, but the price is a bit up there. Hoping it comes down over time. But if I owned a restaurant, I'd be all over this, in a "Break Glass" kind of case.
I think the price point seems reasonable. It's a patented medical device without much competition. They have a target market that would spend the $150 without thinking twice.
They may eventually want to target individuals and those not in the high-risk area -- in which case the price will need to drop. However, for their current stage and what they're after it makes sense.
I've heard from an EMT friend that most choking deaths happen in restaurant bathrooms. Somebody gets up to excuse themselves to be polite and dies alone beside the dyson hand dryers.
As a person with a medical condition that causes me to choke more often than a normal person would, I usually excuse myself because rectifying the situation typically involves vomiting.
My guess is that as manufacturing costs lower and competitors realize the market, the price will eventually go down. Even offices, schools and other public places could benefit from having this also.