OsrsNeedsf2PSwappa.com for GrapheneOS compatible devices – Stay Away
https://discuss.grapheneos.org/d/33727-swappacom-for-grapheneos-compatible-devices-stay-away
Swappa became a no-go for me when they started making exceptions to their rules for commercial sellers, justifying it by saying they were inherently more reliable. For example, using stock photos for multiple devices instead of the device you actually receive. All of three of these phones, based on the seller names, were those reliable sellers.
> we are unfortunately not able to guarantee bootloader unlocking, as it is not feasible for us to search through thousands of devices in order to find one that is
Ohhhh, is that how it works? Maybe I should try that next time. Instead of selling broken hardware as "NOT TESTED, AS IS, PARTS MACHINE" I should sell them as "100% working!" and when someone asks, I'll tell them "sorry, it's not feasible to search through all devices and find the working ones"
Imagine a supermarket telling you "sorry, it's not feasible to check the expiration dates on all of our products".
I feel like supermarkets more or less do tell you this--I get expired crap all the time if I don't check myself.
In the context of an online marketplace "Unlocked" means "Not carrier locked". This has _nothing_ to do with the bootloader.
I've used eBay to buy several used Pixels for GrapheneOS, without problem.
The easy way is to search for ones for which the seller explicitly says "OEM" or "bootloader" unlockable/unlocked (or seller says it already has "grapheneos", "graphene", "calyxos", etc., installed).
For awhile, I came up with some tricks to try to get a better price by identifying ones that were bought directly from Google (rather than through a carrier, which are who has been disabling bootloader unlocking thus far), but decided it wasn't worth the effort.
Of course, you can also just buy a new one from Google.