What are some of the mishaps that can occur when breeding and selling balls?

Accidentally selling a ball with a barely noticeable kink?
Selling a ball that refuses to eat after a move?
Selling a het that doesn't prove out? (sperm retention mistake*)
Shipping a ball that shows up dead, or not at all (shipping mishap?)
Selling a desert female to someone who plans to breed, but didn't do the research?
Selling a sick snake (RI, mites, internal parasites, scalerot, etc..)

I'm sure there are more. Feel free to comment with more potential issues. I do realize that some of these can be avoided with strict quality control and buyer responsibility, but when these issues DO happen, what would you do to rectify the situation? You can quote this post, and enter your solution to the situations in a line beneath them . I have yet to breed and sell my babies, but i've been the buyer in some of the situations mentioned.