This is for a small, more nervous negotiator, the types who don't like to bother saving some money, say, at least two of your life hacker editors. If you're not sure where to start knocking on prices, try starting 15 to 20 percent below your absolute cost limit, as suggested by Top Show. It's basically selling up to the markup that the seller is probably putting on the product you're trying and going down from there fast. Easy easy, but you want to start somewhere, right? Photo by jenn_jenn.