Mark Millan for CNN:

As Apple is reportedly readying a third-generation iPad to be unveiled in the next month or so, owners of previous versions of the tablet may be contemplating a way to unload them for cash. Fortunate for them, the iPad can be resold for about half its original price a year or more after it hit the market, according to data from two popular online researchers that was compiled for CNN.On the other hand, Amazon.com’s Kindle devices, which analysts say pose the greatest threat to Apple’s dominance in tablets, have not been as sought after in the secondary market.

Another illustration of why it’s an iPad market and everyone else, as opposed to a proper “tablet” market.