I've never really found anything on Craigslist in my area. I've always found a bunch of overpriced stuff that literally makes me lol or say "wtf" out loud and shake my head. Either way, you have to be careful.
I've not only heard of people getting majorly ripped off, but I've also heard of people getting robbed and/or murdered by people they've met through Craigslist. I would suggest meeting up in a public place and/or have someone with you when you meet up with someone you've found on Craiglist.
I know it may be off topic, but I've seriously been surprised by all of the news reports lately about the bad side of Craigslist. To answer your question, though, I do think that Craigslist would be a good option if you can find the right deals. There's a thread on another board I visit where people post some of the amazing deals they've scored thanks to Craigslist. Therefore, it can definitely be a worthwhile option.