iPod economy: the iPod add-on boom roundup - another take.

A notable quotation:

"the rule of thumb in the electronics industry is that with
items like cameras or cell phones, people probably spend, on average, about 10
percent of the cost of a device on accessories. Apple has sold more than 10
million iPods, probably at an average price above $300, so the 10 percent rule
would easily put the iPod add-on market in the hundreds of millions of dollars.
But many believe the market is even more robust, with casual users buying a case
and a spare charger and many enthusiasts spending as much to outfit the iPod as
they did on the player itself."

Enter iPod economy era...