The Cadillac CT5-V Blackwing is one of the most under-appreciated luxury cars on the market, with the power of a supercar and the looks of a Cadillac. The CT5-V Blackwing Deep Ocean Package is $26,995, on top of the models’s base price of $102,795. The Deep Ocean Package might, at any rate, communicate “expensive” to the few who are able to get it. A 2026 Cadillac CT5-V Blackwing on track. One could also forgo the Deep Ocean Package and have almost enough money to buy a second Cadillac, with a base CT4 starting at $36,000.