lewm,
I guess I could call the ’new to me’ 2015 BMW 650i xdrive convertible an audio purchase, it has the upgraded B&O sound system.
My neighbor bought a beautiful new Mercedes Roadster, too cold to put the top down now. I just put the hard top on Donna’s 2005 Tbird Saturday.
Like most used audio, the $119k new sticker price dropped to 28% in 9 years. Only 33k miles. I recall a period when used Mercedes gained in value, my Dr. friend made money on all his cars. My Sony xa5400es CD Player is gaining in value, I was shocked a few years ago, would be lucky to find a good one for the $1,000. I paid. Glad I did, best one I ever heard/owned. I feel the same way about the BMW.