Want to make more money with your eBay listings? Well, duh. BusinessWeek suggests that you extend your auction time for better profits:
Researchers from the University of Arizona and the University of Michigan found that longer auctions tend to fetch higher prices. While three-day and five-day auctions yield approximately the same prices, seven-day auctions are about 24% higher, and 10-day auctions 42% higher on average.
As a longtime eBay seller I've actually found this to be somewhat true, but it all depends on what you're selling. Any eBay sellers out there that can testify to the big money with longer listings? Thoughts to comments or to tips at lifehacker.com.