You need to understand something when looking at: NADA, KBB Edmunds, etc...
1. NO dealer EVERY pays 'trade in value' for the car
2. NOBODY ever gets 'private party price' when they sell.
3. ONLY suckers pay "retail" when they go to the dealer.
There are exceptions to this, but in general the prices there are very inflated.
As stated above, get a PPI at an independent location- NOT from the selling dealer.
Keep it as simple as possible...but no simpler.