Gingerzing, we had a similar experience during a garage sale. We were asking for ten cents per paperback and a quarter for each hardcover - so, not exactly a fortune. One lady came up to me and said "So, it's a buck for a bag of books, right?" I said "No - prices are as marked." She grabbed a plastic grocery bag, stuffed it so full of books that it was bursting at the seams, and shoved a dollar at me, saying "Buck a bag!" Once again, I had to say "NO. Prices as marked!" She flung the bag down, books scattering everywhere, and stomped off.