I would only pay based on detailed market research what the phone is actually worth. I would never just take a suggestion with somebody thinks it’s worth, when you should base it off what’s the overall resale market tells you through sites like eBay, Swappa, even your local community selling groups through like Facebook marketplace for example.
I just got an unlocked XS in gold 256GB for $450. That’s not a normal price though I know. It’s a refurb unit, but for $450 I couldn’t pass it up.
From apple store?