Just sold a 6 pound 4 ounce backpack to a guy on craigslist. When he got to my house I wanted to grab him and say "Seriously!? You are going to give ME $100 for a pack that weighs over 6 pounds? Are you NUTS?"
Nice guy, I'm sure he'll love it. But somehow, I felt guilty holding back when he asked why I was selling it - I wanted my $100. I was honest - my gear doesn't even come close to filling 4500ci, but still... 6.25 pounds.
Ever sell gear that made you feel guilty?