Helmet M40 was found during diggings in Stalingrad region of Russia in 2000s. The exact place where the helmet was found is not known, but it was found somewhere in combat positions near the don river
— 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