I've got it already
I guess I'm in one of the test markets in charleston sc. I was at AT&T last week making changes to my plan and I picked up a microcell while I was there.
I don't mind the extra 20 a month. I can sign up for the cheapest family plan for my and my bf and essentially all calls at my house
are now unlimited. I think maybe 10 or 15 would be mote reasonable but in the end I'm glad I bought it. The call quality is absolutely great, plus the data connection is always constant (even though the 3g service is not really a issue here as it is elsewhere).