I've rented one from GlobalcomSatPhone.com for an upcoming Pecos River trip. It is the Iridium 9505A. Need it for a week and with everything minus the minutes it is about $90. Then it's $1.70 a minute if we use it.
Funny thing. I never even thought about sat phones through all the years up to 2014. We went some crazy places and had some awesome adventures, but that wasn't ever part of the equation. And like Cast said, someone knew "about" where we were. lol. I feel it's kinda like the old saying about guns... better to have it and not need it, than to need it and not have it. At least nowadays with me. And yes, that rang true in 2014. First time we ever rented one, we had to use it. I'm sure some might remember the fateful 2014 Pecos River trip with Bert, Dan, Ryan, and myself that ended in a flash flood and waters rising 33 feet. Scary stuff. Of course, the phone didn't save our lives, but it helped coordinating a way out (by way of helicopter), and letting folks know we were alive. It will always be a part of any future extended river trips that are off in the middle of nowhere.
Here's a few pics b_rod and myself took from that trip.
I mentioned all this because I never really believed in those things. I do now.