Note that CARMAX offers trade-in value and is always better than the dealer in this regard in my opinion. Of course, private sale should always yield more...low-to-mid 30s sounds about right. Your car looks fabulous by the way!
2011 Panamera 4S...GT Silver / Espresso
2013 Porsche Boxster S; 2012 Mini CooperS
convertible; '04 GX470
Prior BMWs: `05 645CiC; `07 650i; `08 M6 convertible; '08 135i; `11 750ix MSport