Buyer won, the bank reversal went through
Btw. PayPal will not protect you. They will always find ways to least effort and cost to them.
I purchased from US seller and received 1/2 quantity. Seller ignores emails and PayPal dispute, so after week the dispute was changed to claim. 2hrs later PayPal rejected my claim because I actually received "something" and they do not protect any attributes of the shipment (i.e. quantity). I am out of $110. I don't do anything wrong and yet it seems PayPal always sides with the other side regardless if I am seller or buyer. So much for so called protection.
In Sicily businesses pay Cosa Nostra for "protection", here we have PayPal.
Now back to lettermail - use it for inexpensive shipments. It's impractical to ship $10 item with a service that costs $8~$10 itself. For some reason lettermail is faster than any parcel services, and Light Packet is faster than Small Packet. We also do same as Bernie and just use stamp. Forget protection, you do not have it. Add 50c to your shipping to build-up a recovery fund for inexpensive items losses, kind of like self-insurance.