No that is what you are missing, there is a bunch of people who do nothing but gaslight to get things for next to nothing then resell later.
For example I sold a car last year for $1500, I could have maybe got more but eh that was fine. I know what the market price is more or less but I when I listed it I got about 50 offers under $100, keep in mind I could scrap it for $300.
This is a scam that has come up from online listing, these people put bullshit offers in across many many listings and some even try to threaten and trick.
I used to list things rounded up a bit just for that. If I list something for $500 then I likely would take $400 for it. But when someone walks up to my house loads the thing in their truck and then knocks on my door and tries to force a $20 into my hand to buy the thing… Yeah fuck that.