Originally Posted by kettledrum
But unfortunately you do have to worry about this.
Sure, things like that happen, but they are usually associated with Iphone, Ipad, PS3, Xbox, etc. sales. Most people looking to scam or rob don't even know what to do with a Tivo.
I've bought/sold more than 200 different items on Craigslist in Atlanta since ~2006 and I have not had a single problem with any of the transactions. As for Ebay, can't say the same thing. Claims, returns, scams, fees. Not worth it IMO unless Ebay can give you at least a 20% greater price. Now I always try CL first for about 15% lower than completed Ebay pricing. Usually I get good responses.
I usually try to meet in very public areas. Sounds like the seller in your story was pretty naive, going to the buyer's apartment is a big red flag.