$35 USD per year to just have the privilege of being able to turn on service, then when you turn it on it's anywhere between $15 - $65 USD per month, depending on the plan you get, plus extra billings to fetch weather. Usually when I'm using it I fetch premium weather every 2 days or so, and I usually go out for 5-10 days so it's another $5-10 USD on top of the fee. And I always get the unlimited text package (mainly for my spouse), which is the most expensive $65 plan. So a grand total of ~$110 per year since I usually average about one trip per year where I need it.
I do really like the product itself outside of the pricing. And if you're a high income earner it's not that bad for what it gives you - the actual device itself is also priced a little high, but not unobtainably so (~$250-400 USD). It strikes a really good balance between giving you the features you need to feel like you won't die if you break a leg and also able to communicate with your spouse and get weather info, while also not so high-tech that you can still feel like you're getting away from your normal device and escaping into the world.
I'm sure you're already aware, but you can outright buy (ie no ongoing cost although they're deliberately expendable) devices which solve just this narrow problem (the upkeep cost is paid by various governments) via COSPAS SARSAT. Now, in practice for a lot of people "My wife/boyfriend/mother/son worries when I'm out here" is a bigger problem than "There's a tiny risk I need rescuing" but I think it's reasonable that this peace of mind costs money at least in a world where we still unaccountably don't treat public WiFi as a normal thing society should have†
The no-ongoing cost technology is a Personal Locator Beacon and is electronically almost identical to its sisters on boats, an EPIRB, or on planes, an ELT.
† One of the the nice things about working for a University again is EduROAM, which means WiFi just works for me in lots of places because there's a university, or a college affiliated with a university or some other situation where academics were like "Why doesn't this just have WiFi like on campus?" and EduROAM means your home institution vouches for you but you can use the network anywhere on the planet.
