Second World War German helmet was found in Stalingrad (now Volgograd) in a place called Bald Mountain. The helmets were dropped into one hole. This happened when after the war the battlefields were cleaned, everyone was thrown into the pit and buried. About 30 helmets were found in the pit.
— 10 USD by Russian Post
— 25-40 USD by courier service EMS
— 30-40 USD by Russian Post
— 40-60 USD (depends on customer's country) by courier service EMS
What is the difference between Russian Post and EMS courier service? Read here - link