How does selling in advance work? Do you agree to provide a certain number of head at a certain weight at a specified time? If so, what happens if they are light or heavy? We only have a one way slide - or at least I haven't been able to make it go both ways yet but I am a small producer and can only do this once a year.
Another thing I like about it is that they reward you for doing good herd health practices. In fact, they demand it. They will penalize the liars but will reward you for your extra effort. I like this. Makes you feel good when a buyer asks you to let them know when you are going to sell again.