Four years ago my panel was 75 hours @ $110/hour and I took out ALL the interior. No AP but it was pre-wired for the AP. Removing all the old wiring is very time consuming and if it's done wrong re-wiring is required - my shop knows... I thought it was very reasonable, and I doubt this pricing is available today. Dynon does simplify the wiring with the network hubs and pre-wired cables but it's still a lot of work to connect the GPS, audio panel, nav/com, etc. My view, $15,000 to install the panel shown on the Dynon website is reasonable. I think Dynon v. Garmin is like Pepsi and Coke. I like Dynon and Pepsi and I would do Dynon again, even with the wait for the AP. (I hope the upload of my panel works - I seem to mess it up most of the time)