There's a bit of everything. I sold a couple for $5 each (even though I paid more for some of them) just to recover some of the costs invested in them.
Another couple just weren't working out in my flock, so I gave them away. As time gets closer I'm sure everyone will have a better idea what is brining, and some trades will probably be lined up.
I know last minute I just brought a couple extra.
It seemed to be a pretty low cost event last year, but if someone has some purebred or valuable chicks, I'm sure others (like me) would be happy to pay market value.