Shouldn't this be common sense?
Even after received payments, there might be cock-ups from paypal
(heard it b4) whereby your payments gets "deleted" or something
like that... can't rem the full story though.
Best is face-to-face, pay cash handover goods. 
Originally posted by monoslayer:
[b]ALWAYS ask for payment 1st b4 sending the
goods.. inform the buyer its ur policy n insist tat he/she do it ur
way.. tell the buyer u will send out the item within 3 working days
after u receive the $$.. [/b]