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I need to sell a 27" topped out iMac.

Would you use eBay, Craigslist or someplace I'm not thinking about?

Amazon and ebay are probably your best bets. You can't get much from craigslist, especially if you customized it (the value goes down exponentially if that makes sense).

But best of luck!
 
There is also kijiji. I would try out local sites like Craigslist and Kijiji first before going to eBay. If you're in a sizable city you will probably get enough offers anyway. With the high fees on eBay (over 10% once you add in PayPal) you can afford to sell for a little bit less locally and still come out ahead. Plus shipping will also limit how much online buyers are willing to pay, and with a high priced item like this you better include full insurance, too.
 
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