Paypal is safe, I push $40K a year through them, eBay on the other hand is still a gamble....but buying (especially low-cost items) is still fairly safe, its selling where I get too many false and non-paying bidders...check the feedback and if they have 95% positive and up you are good, just stay clear of anyone with multiple negative or LOW feedback. Its a judgement call really.

If you pay by Paypal the seller will get your address....