So I sold something on ebay (which I haven't done in 5 years), and someone uses "Buy it now" right away to get it. Buyer appears to be very young, and immediately sends me the money via paypal and wants me to call him on his cell phone when I ship it - seems really desperate to get the item (just a computer game). Paranoid that I am, how easy would it be for him to get the item and then claim he never got it and ask Paypal for a refund? Do they do that automatically, or do they investigate the matter? What sort of safeguards exist for sellers? Thanks in advance.