Well its $200 for the tablet, $150 for the fascia and another $50 for the HVAC relocation.
I already have the OEM aux input so that'll plug right in and USB car chargers are super cheap now a days. That puts it at around ~$400-$450.
The dynavin d99 with android is $849 +$50 for the HVAC relocation which puts it at $899.
I also prefer being able to flash jellybean on the tablet.