The helmet was found near Rzhev, according to the events of the Rzhev-Vyazma operation of 1942-1943. The helmet was found on the combat positions of the Wehrmacht.
— 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