It depends on the terrain, buildings, etc but the UHF PD782 I have used can access a repeater well over 15-20 miles away in digital with no problems. For simplex (no repeater) I have not tried that but you probably could get a mile to possibly a couple of miles again depending on the terrain, buildings, etc - much like what you would see with a UHF FM analog portable.
$700-$800.