Millions now can buy Apple stock cheaply for retirement accountsApple had been on a serious tear as of late — rising almost 120 percent since the beginning of the year. All good things must come to an end. In the last four days, AAPL has shed 20 percent of its value. As Saul Hansell of the New York Times would tell you, this is a good thing if you don't already own shares of Apple. This drop isn't because of anything related to Apple. All of Nasdaq is down, thanks to fallout from the subprime lending crisis and the value of the dollar and oil prices and that gnawing fear in the pit of your gut that this is going to end badly, just like it did in 2000.