When my kids were young enough to haul a backpack to school every day, I bought inexpensive ones at WalMart and similar places. But I was constantly replacing the darned things because they didn't last long. So one year I actually paid the money for two really high quality ones from American Eagle. Those bags lasted for years and were, in the end, a much better buy than all the cheap ones.

If you carry your laptop everywhere, a Prada bag won't disintegrate in no time the way the so-called bargains do. But what a pricetag! Up to $600 for those goodies. So eBay is a real boon to buyers, but the demand is very, very strong so sellers can profit, too. The best of both worlds. How sweet it is.