In original condition, matching numbers, these run about $250 and up. If you reload for them, realize it's Turkish steel, not German steel, and do not make up hot loads. They were made on German tooling by the Turks.
As long as you keep reloads to commercial strength you'll be fine.
I've always thought the Turks were pretty smart to keep out of WWII. Both sides were giving them money and goods to tempt an alliance, but the Turks seemed to be well aware that their military would have lasted about 3 weeks facing either the Wehrmacht, the British in the Middle East, or the Russians.