When I bought the CT4-V Blackwing, I managed to full break even when I sold it after 2 months. The local dealer gave me 6k over MSRP, which covered all of the taxes and registration fees. I did lose on the M4, but not terrible. BMWs depreciate so quickly. They are like 50% in 3 years. I did plan or at least hope to keep it, but my 5 Blackwing went into production literally 1 week after I took the M4 home. I decided to rip off the bandaid to get the one I really wanted. Had I waited to say today, the hit would have been much worse. I ended up having it about 2 months and 2000 miles.
I feel the Cadillac is going to remain very valuable, especially if it is discontinued soon. Some think it will be done this year, I fully expect they will make it in 2024. For 2022, of the 1800 cars produced, only 750 were manuals. When it is all said and done, I guess there be around 2500 of these supercharged V8 6MT Blackwings.