> I have had three mirrorless Sony cameras (albeit two secondhand)

Wait wait wait. Secondhand you say? We need to dig into that now. Was it a purchase by a binding agreement? Was it an original camera or did the owner made a 3D-printed copy? We have more questions, hold on... :P

I have the receipts. I've always retained them for the deposition. :-)

(It is, of course, not really out of the question that the first sale doctrine will always completely cover things like subscription-upgradeable cars and cameras)