The helmet was found near the village Ezhovka in one of the Arroyo. In these Arroyo had a lot of residential bunkers. But in November/December of 1942 they suffered greatly by fire Katyusha rocket launcher (the Germans often called Stalin's organ).
— 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