I have a very anal Amazon customer.
When I first got the message I thought it was for a collector item I posted, which made perfect sense why someone would be so concerned about how it was packaged. However, what I am selling is a new paperback that is just a book for a poetry class I had last semester and am selling for the tiny amount of $6.50. I respect his concern, but I felt weird getting a lecture about his previous experiences. I use bubble mailers (98% of the time and when I don’t it is usually small, very used books) and always use media mail and most of the time the piece arrives quickly. I’ll use first class, but geez don’t lecture me… it isn’t like I was the one who screwed up.
EDIT: The guy didn’t even make the purchase from me! Because, on a Saturday, I took a few hours to reply to his message. -_-