I have a great postie.... if I am not home they leave it at the local post office.

I was more shocked by another company that delivered my $800 phone and left it at my front door   😮

I have never used the C&S signature option and send anything that will fit in an envelope that way. I have never had anything go missing.

Whilst non-signature services are allegedly not covered by AP, I would put it to the test if it happened to me and the tracking showed they'd lost the parcel. Plus you have Paypal protection and thus the time to track it down before you refund the buyer.