I have a theory. For the sake of clarification, maybe we have to establish a standard. For example, we could say, a low-end pipe from reputable factories (like many of Peterson's low-end series) versus their high grades. Maybe the difference between low-end pipes from well established company have less difference in smoking quality from high-end pipes. But if you go lower than this standard (for example, the basket pipes), because there's no standard conformity for those pipes, you're likely to find mix smoking quality. My theory is that, once a minimum standard is met (as many of you have mentioned the engineering of the pipe, the quality of raw material, and such things), the difference in price range from that point on might actually reflect the outward design and aesthetic quality more than the smoking quality itself (after all, once you get pass the basic engineering necessity, how much better at burning tobacco can a pipe get?). So maybe it's the collector's business now, at collecting beautiful briar, hand-made pipes from famous crafters and so on. And the price reflects these extras, rather than reflecting the smoking quality of the pipes. In the same way a Mont Blanc pen, doesn't write better than supermarket pens like Bic, I know this for a fact, I spend a lot of time marking books with pens. And I don't think Louis Vuitton bags hold stuff better than any well-made leather bags (in fact most Louis Vuitton bags aren't even leather), the high price reflects the aesthetic and the brand-name rather than the use value of the product itself. It was just my opinion...