['I went to meet up with someone who was going buy a guitar from me. He lived 30 minutes away. The guy never answered his door when I got there.', "I hate it when that happens. I don't feel like it is necessary to flake,they should be sure before they lead people along.", "i was so mad.  it was a $400 guitar I was selling or I'd not have driven out that way. I had him banned from the sales app i was using."]
That's completely reasonable considering the distance you had to drive for no reason. hopefully another interested buyer pops up soon.
I went to someone's home who was going to buy a guitar from me after confirmation that he would be there.