The helmet was found in the forest on the left Bank of the Don river near the village Trehostrovskaya (Stalingrad region). This is marshland, thanks to this helmet is well preserved
— 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