I sold a brand new in box factory sealed iBuyPower pre built with 9800X3D and RTX 5070 for $1,500 on Marketplace that's $2,000 on sale right now. I even provided a receipt for ~$2,200 and told him I missed the return window. He removed the seal style tape that says "OPENED" once unpeeled and took it out, looked at it and good to go.
Now he's messaging me claiming it's not even a 9800X3D and 5070. He sent me another photo with the serial number on the back and I saw that he didn't even remove the stickers from the back, meaning he didn't even turn it on. Calls me a liar.
This pissed me off because there were lots of other buyers willing to take it but I worked with this guy since he messaged and gave me an offer first. Don't even know how to deal with someone like this.