It happens all the time. Electronic products of any description are the most targeted too. That and cars, they are quite common to be scammed. It took me 6 attempts to sell a mobile phone on ebay. From scammers to people that simply bid and don't pay, it is a pain in the butt.
Then there was also the time my brother got scammed into thinking an item (another mobile phone) had been paid for (through a fake paypal payment confirmation email) and packaged it up and sent it off. The only thing stopping him from losing the phone was Aus Post who sent it back to him due to some kind of filters they have. Apparently, at the time they had stopped packages containing electronic goods from being sent to certain countries, so he got very very lucky that time.
Then there was the time I tried selling a car online. I received more scamming emails than I did legit emails about the sale. I gave up and removed all the ads. There was one email I replied to a couple of times just to see where it was going... Bottom line, Why would I want to give all my banking details to someone in the Bahamas so they could transfer the money to me so I could put the car into a box and on a boat and send it half way around the world. The car was a classic, but it was AMERICAN. Why would anyone in the Bahamas look in Australia for a Classic American car when quite clearly, finding one in Florida would be much much easier. Idiots.
Then there was the time I thought about buying a car online (on ebay). Another classic, located in Aus, the ad looked legit, it really did. I emailed the seller who sent me more photos of the car at which point I made the observation that the car had Texas number plates (okay plausible, I thought), so I emailed back and the seller asked me to send the payment to the UK. FAIL. NO.
Then there was the time I decided to stop writing this because its making me to angry. That time is NOW.
If you really hate scammers as much as I do and want to see them get whats coming, have at look at 'The Scam Baiter' (
http://thescambaiter.com/). It's a forum where people post about the scams they pull on the scammers and the ridiculous things they get them to do to 'Make the business deal'. Funny, funny, funny.