I bought the app radio off locally not retail but the cheapest I've found it was on amazon as well as the metra kit if you decide to add the back up camera it will be under 700 for entire set up. Around 550 with no camera. Time to install depending on how familiar you are with your interior and the wiring may take 8 hrs total I'd say. Reason it took me this long was due to removing parts of the interior that the instructions said to but were not necessary.
If your looking for a cheap metro kit I have one that I got when I bought this set up. Pm if interested