You can't possibly tell that from a few photos.

As a buyer who was a victim of theft in exactly this fashion I can tell you it does happen.

The only thing to learn from this is that buyer and seller should insist on insurance.

I put in a claim with my postal service and was told the buyer had to make the claim with his postal service as he paid for the service. Luckily he was willing and a refund was issued. The amount was small but I learned a valuable lesson. Worth paying insurance for even the small items.