Which is why I said for some products, like discs,DVDs,books. Evidently you ain't going to buy a pair of trews online unless it's from a site that you've already used and got a perfect fit of exactly the same product. I go through 5 or 6 pairs of running shoes a year, mainly because I like them not to be overused. I buy online from Wiggle, same brand, similar models, always fit perfectly and I save 100s of €s each year buy I wouldn't but a coat or a packet of pork chops. Depends on what it is and books,discs and DVDs are what they are.