Thanks Asher. I tried (some) shopping portals and wanted to try craigslist but I'm not so familiar how to search it. Don't I have to pick a specific city to search? Or can I search the entire site at once?
It's best to search your city (or nearby), get a phone number, talk to the seller, meet up, inspect the goods and pay cash.
If you specifically want to search more than one city, you can do so using
crazedlist (remember to disable your referrers), however, there are lots of scammers on craigslist, so I wouldn't buy anything via paypal/mail.