In THAT case, if he didn't insure it, well...I completely agree. He needed to insure it, and if he wanted to, make it mandatory that the buyer pay the shipping AND insurance charges. This is a MUST.
Ebay sellers should always insure what they sell. When you sell an item on eBay, YOU are responsible if it is lost or damaged in shipment. It is the SELLERS responsibility to purchase insurance.
If an item is lost or damaged and you did not insure the package, YOU are responsible. Most eBay sellers are still unaware of this policy. You used to be able to make insurance optional and charge extra for it. Now, your supposed to add this extra cost within your S&H charges.
Since this was an eBay transaction and the seller did not insure the item, then the seller will likely lose this claim.
Go ahead an file a PayPal claim. The dumbass should have done a better job packing it anyways.
New Ebay Insurance Policy & Buyer Refund Policy - The eBay Community
If I sell something for $100 or less, I usually just self insure it, but not always. Sometimes, it just depends on what kinda vibes I get from the buyer. Transactions over $100 are always insured.
Do yourself a favor, pull out the 3 811 tubes and buy a matched trio of 572b tubes. They are a direct drop in replacement and have a graphite plate. The 811 and 811h ameritrons both have the same size plate / filament transformer. The 3 572 b tubes will last forever and will be capable of producing what a 811h would do with 4 811 tubes. I have these things in for repair all the time. When a tube shorts in a 811 h you usually lose one or more of the grid loading resistors and the meter protection diode. If it is a 811 3 tube ameritron then just the meter protection diode. Other failures are the parasitic resistors ,or filter caps if a bleeder resistor opens. The china 811 tubes they come with are just horrible.