I live in Canada. I sold a 16GB AT&T Black iPhone 4 over eBay, auction style. A 6-month old USA user with 5 feedback ended up winning the auction. I specified I would ship it "Standard Int'l Shipping [USA Small Packet Air]", it went out this Monday. Today, the buyer contacted me, furious, that he had not received the item yet. I tried explaining it would take 4-10 business days as Canada Post had estimated. He kept insisting it should arrive in 5 days. He simply wouldn't believe me (possibly due to his lack of experience on eBay), and ended up filing an Item Not Received Dispute. Now, the problem is, the shipping method I used doesn't have an update-able tracking number (only displays when I made the shipping label). There also isn't any delivery confirmation or signature added, which seems to be the only proof PayPal will accept from my side (unless the buyer contacts them and says he received it upon delivery). Am I screwed? Anybody have similar experiences?