What a time for a book about computers! Machines are faster than ever, with some systems clocking in at more than three gigahertz. Yet, amazingly, they cost less than ever before, too. You can buy a new personal computer for less than $300—at least if you turn over rocks for the best prices and look for a free operating system (which is sort of like buying a car and curb-surfing for tires).
Source: The Winn L. Rosch Hardware Bible
I don't understand what that means.