"Mr. Manjoo admits that he’s a fan of both Amazon and comparison shopping because, he says, he hates “paying more than he should.” That’s an interesting choice of words. Does he mean, for instance, that he hates paying more than he “has to”? This is the crux of the matter. What should we pay?…The Steve Jobs biography is the same book wherever we buy it. It’s the effect of buying it locally that differs. If you buy the book locally, the sales tax you pay will fund local schools and fill local potholes. You aren’t paying more than you should. You’re just paying, up front, what it’s going to cost in the end, after your taxes go up. If you imagine that potholes get filled for free or that they’re paid for by somebody else, you’re deluding yourself. Or, suppose your taxes don’t go up and the pothole doesn’t get repaired. You drive over it and damage the bottom of your car. Won’t the cost of repair eat into your Amazon savings? And if you think local schools shouldn’t be funded adequately, then shame on you."