It crossed my mind to buy multiples for resale value, but I figured that after the demand for old editions they would be printing a healthy number, and there are enough books going for wild prices (looking at you, Original Oberndorf Sporting Rifles) that I’d rather as many be sold for reasonable prices as possible.With the 4th edition out, I expect the price of the previous editions to tumble. The 4th covers and enhances the previous editions.