I've bought and sold a lot of computer gear and other stuff on Craigslist. Some sellers invite me into their home while they're alone, and are almost inviting me to roll them and rip off stuff. Crazy. Others are cautious, and do the swap at a neutral 3rd-party site. I'm the latter, buying and selling at well-lit parking lots with lots of foot traffic around. I've become friends with some I did deals with, and we laugh about how cautious we were of each other. It doesn't hurt to be cautious.
All of my Craigslist electronics deals have been at a fast food joint or coffee shop with free WiFi. In addition to being a public place, it also offers a comfortable place to wait if one party or the other is running late, and the WiFi means you can test the goods.