I sold my 2003 Anniversary Road Glide about 3 years ago for $13,500 and I refused to throw in the matched Tour-Pac for that price. Sold the Tour-Pac on eBay for another grand. My was optioned out about the same. Different parts, but about the same value. I had around 30K on it.
So yeah, I'd say it's a good price. Could you find another 10 year old Anniversary R/G with less miles? Maybe, maybe not. The nice thing about this deal is you know the seller, and if you do have a major problem (which is probably unlikely, from the way it sounds) at least you can go to him, and perhaps work something out. Good luck trying to do that with some anonymous seller on eBay or Cycle Trader.
Don't worry about the miles too much. They're pretty simple machines and easy to fix. Check the cam chain tensioners, swing arm bushings, do a leak down compression test, and enjoy the ride...
I hate that motorcycle they make me ride. I'm here to tell you there ain't nothing in the world I hate worse than that elephant under my ass.
Officer John Wintergreen reference his Electra Glide.
-Electra Glide in Blue, 1973-