You have posted many times about your perceived value of CPO as if it's a must and completely worth the upcharge. Let me tell you without a doubt CPO is nothing more than a marketing scam and this comes from people inside the business. Very often those CPO cars are not checked out to the extent you think and the coverage is also very limited and nothing close to the original warranty or a good extended one.
I once saw a E46 M3 with the CPO tag in front of the BMW Gallery store with the wider back wheels in the front! I went to tell the salesmen this and only then did anyone notice this. LOL