The helmet was found to the North of the airfield Gumrak in a large arroyo. It was a place that housed a small hospital for wounded Germans, expecting a shipment from the Stalingrad pocket in the hospital. Damage to the helmet was most likely obtained as a result of mortar shelling.
— 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