Bro I get my Pixels on eBay from reputable sellers who make sure the bootloader is unlockable and I never paid more than $200

Since GrapheneOS's update cycle is only reliable for a few years at a time, it makes zero sense to buy the $900 Pixels that are brand new. So I only buy the cheap ones from years ago. Easy peasy. They last me quite a few years. I'm on a 6 Pro, and my home phone which never goes anywhere is a 4a