Yeah, the cheapest plan is $14.95/mo ($11.95/mo if you pay for 12 months) and includes 10 "free" text's, $0.50/text after that.
I wish they had a non-cost plan (or maybe $10/year) plus $5/text or something like that for use in an emergency. I have an InReach, but haven't used it for an emergency (yet), I've sent a few texts to friends/family while outside of cellular coverage since they are "free", but would rather save money and only pay if I need to use it in an emergency situation.
Maybe they'll have to get more flexible with their plans now that the iPhone has this feature, and T-Mobile is reportedly coming out with Satellite connectivity for phones.