seller can add tracking number right in PayPal (just like eBay) and that verifies delivery to buyer and its visible to PayPal. I have heard of people saying that a buyer claimed the box was empty upon receipt, and opening a case. Fact is, most important thing is to have 100% confidence in seller. References, ratings, past history on forums, etc. They can ask the same of you. In any transaction, there is always an element of trust involved. Good luck!