Proper action for a stolen package from a Buy/Sell/Trade transaction

[facingthelake1188]

I am posting this at the suggestion of a fellow member with whom I have had the pleasure of several mutually beneficial trades/sales.
I would appreciate the input of the many veteran members on this forum as to the proper action that should be taken in this regrettably unfortunate situation. On Nov. 19, I purchased a 1916 Altoona Tribune Ray Caldwell for $225 + shipping from a long standing member with over 4000+ posts. Being a new member, I was understandable hesitant to enter into transactions paid via PayPal F/F with little recourse if things went bad but I saw that so many of you post all your successful transactions that I felt comfortable dealing within such a large community of fellow collectors.
Postal tracking indicated that my package status was “delivery delayed” while showing “delivered to” my local post office “on Nov. 23. Knowing that mail this time of year can be slow, I waited until after Thanksgiving before going to the post office to check on the delay. I spoke with the branch manager, a lovely woman who I have interacted with for many years. After going to her office, she came back and showed me an email she had already sent out to the postal inspector listing about ten tracked items within the same “satchel” (her word), including mine, that were supposed to have been delivered to the branch on Nov. 23, but were not on the truck. [She explained that even though tracking shows the package as delivered to the branch, in actuality that scan is done at the regional hub when the satchel is set for inclusion of the next truck delivery to the local branches in my area. They do not actually scan the packages when they arrive at the local post office. Strange but true] She apologized profusely knowing that these packages were clearly stolen by a crooked postal employee. A bunch of packages do not just go missing without help.
So of course I contact the member and relayed news of this mess and asked that he file a claim with his branch for the insured value (I do not know if he ever insured the package but most now come with a minimum $50 of insurance standard.) NO RESPONSE. I waited another week hoping the postal inspector might get lucky and again emailed the member requesting a refund. NO RESPONSE. Not wanting to out this person on the forum immediately because I truly believe the card was shipped as promised, and me being a fairly new member, I asked a veteran member with whom I have had several successful transactions, both trades and sales (cards and cash exchanged both ways) for his opinion on the appropriate resolution in such a situation. He responded...
“That's a real bummer about your card being stolen. That really sucks. Did the seller confirm it had been insured?*
Ultimately it's the seller's responsibility to get the card delivered to you, and if it fails to get there he should issue you a refund. My guess would be he's holding out hope that the package is found or delayed considering the issues with the post office of late?... but in the end it's on him to get you the card and if it doesn't get there he needs to issue you a refund. Is this a board member regular?”
You will not be roasted for bringing this up, but you can consider posting about it and not outing the board member but asking opinions on what to do. You will get a lot of people saying you deserve a refund... Name the card, what you paid and detail it all. But don't name the seller... yet.”

Sorry for the long story, but I wanted to tell it as accurately and completely as possible. Please give me your opinions, shouldn’t it be the sellers responsibility? Would it be wrong to warn others about the actions of this member?