Helmet from personal collection. According to the collector who kept this helmet, it was found in Gorodishche district of Volgograd (former Stalingrad) in the 1990s
— 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