A CTSV is basically the same as my car (based on my hours) The only thing that would make me change the price is sedan vs. SUV. Depends on what you want really. A wash, clay, and wax is significantly cheaper than a detail with a 2-step polish, which is what I did in the above pictures.
Interiors are included in the price for my details now.
Without 2-step polish: $175
With 2-step polish $350.
Keep in mind that the 2-step polish is a very lengthy process and normally takes me about 17-23 hours depending on the condition both inside and outside of the car.