The rush is on for those looking to trade in their iPads, and CNET reported that 10 times as many people are looking to upgrade this year as than did for the first- and second-generation iPads.

Citing eBay, the report said that first-generation, WiFi-only iPad models are among the most popular trade-ins.

For those looking to make a quick buck to subsidize their next iPad purchase, there are quite a few popular places for iPad trade-ins. Apart from the obvious places like Amazon or eBay, there are sites that specialize in trade-ins such as NextWorth and Gazelle. Some electronics retailers such as Target, Best Buy and GameStop will also take iPad trade-ins.

If you’re serious about getting the next iPad, then you should sell now. The price you’ll get for an iPad is already dropping and is likely to fall even more quickly after Apple’s media event Wednesday floods the market.

Trading in the most basic first-generation iPad (WiFi, 16 GB), will likely get you a trade-in of somewhere between $120 and $200, depending on its condition. At the other end of the spectrum, a top-of-the-line iPad 2 (64GB, WiFi and 3G), is likely to net you over $300.

There are, however, several things that could bring your trade-in value down. Apart from scratches and cracks, trade-in sites are also looking for iPads that aren’t engraved, have their original, working cords and, in some cases, come with their original boxes.

If the iPad you’re trading in is shy of picture-perfect you may want to try selling it yourself through sites such as eBay or Craigslist — just be wary of fraud.

And finally, there’s always the option to return your iPad to the mothership: Apple’s recycling program will take your old electronics and give you an Apple Gift Card in return.

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