Reading books on the iPad - a preview for those of us without $500 to spare!

Wondering if an iPad as e-reader is worth it? Don’t have a spare $500 to find out? Check out Steve Jobs’ preview of iBooks, the iPad reading app.

Of course, iBooks isn’t the only e-reader app for the iPad out there. Industry giant Amazon already has a Kindle app, and a lot of market share. And iBooks isn’t pre-loaded on Apple’s new doohickey, meaning users have to go to the app store—presenting a possibly major stumbling block in Apple’s e-book marketing plan.