I've been ripped off buying a PS3 60GB - don't get ripped off too!
1. Look at the feedback - don't buy from sellers with no or little feedback.
2. Look at the sellers previous transactions - if they're in a short space of time and for small amounts - alarm bells should ring!
3. Pay with Paypal - from a trusted ebayer and get the £500 protection.
4. How long has the seller been a member? Look for well established sellers who have something to lose if they receive bad feedback.
Don't be stupid like I was!