I paid $8500 for a '08 Roadstar Silverado S back in Feb. of this year. The bike had 5600 miles, mustang seats,air horn, breakaway cruise with the Silverado package.
The price on your potential purchase seems about right and I know you would be well pleased with the Roadie, a great ride. Of course make an offer, you certainly might get it for less. Good looking ride by the way,very classic.