News You Can Bruise for 2004 November 2

How much of a sucker's game is it to be browsing through a used bookstore or antique shop and say "I think this is seriously undervalued; I could perform arbitrage and sell it on eBay for marginally more money than this"? I'm pretty sure it's completely a sucker's game, but I keep hoping, but my test objects turn out to have really small eBay markup margins. Obviously I'm becoming one of these people.