Paypal dispute case

I tried to reduce the shipping cost. So I only charge $3 for the shipping.
The registered letter to china would cost $12. This person didn't ask
register mail and didn't pay the registered shipping also.
Now this person in China said he didn't receive the item and wanted refund.
I scanned my receipt to PayPal. Is it good enough?
What should I do to win this case?
Thanks

所有跟帖： 

• 你把東西賣回國了? -EBAY外行- ♂ (0 bytes) () 07/13/2010 postreply 14:29:45

• yes -majorindulgence- ♀ (0 bytes) () 07/13/2010 postreply 16:46:16

• you had no chance to win , must use express mail at least -wxy431- ♂ (0 bytes) () 07/13/2010 postreply 15:10:18

• but he didn't pay the express mail fee -majorindulgence- ♀ (0 bytes) () 07/13/2010 postreply 16:46:47