If you have a local phone book you might be able to find it in the white pages.
Once the system is installed you usually have a 30 day window during which you can cancel the service.
If you are looking at 10 miles that is going to be too far away (50,000 feet) unless you are in a subdivision and they put a remote out there. If you have any neighbors ask them if they have it and see how well it works that really is the only way to know or sure. (speedtest.net is not perfect but it gives a good general idea of speed)
I don't have have a active phone line (for 10 years) but plunged in a few random numbers I know that are local and it found a Wire Center 8.7 miles and another 6.7 miles from here before I hit max search's/day.