Marian feels if you decide to have a sale, let the specialists handle everything. I always tell clients, let ME throw it away. One time I arrived at a house in time to see a truck going off to the dump, filled with old dolls. The owners assumed they were worthless. We could have gotten hundreds of dollars for the dolls.
Stories abound about hidden items found during sales and by people who purchased items.
There was an old cabinet on the porch, which didn't sell. As I was moving it to a charity, a foil piece of paper fell, propped under the leg. The owner's were thrilled. At the end of the sale, most services will take bids on unsold goods. No one should feel shy about prices on the second day.