It might be true, tried to find the gross revenue per unit for an iPod (unable to). However, during my investigation I did find this interesting blog post.

  http://daringfireball.net/2008/01/aapl_q1_2008

The author makes a few interesting notes about Apples Q1: * Mac sales and iPhone sales were equal * The gross revenue per iPod was $181

Also, apple made $808M on iTunes.

There is one interesting bit of foretelling in the post (written 5 months ago)

     The market for third-party software for the iPhone and iPod Touch is already big, and I expect that by this time two years from now, there will be more iPhones/iPod Touches in use than Macs. (Imagine the unit sale numbers for a $199 iPhone two years from now.)