That giant bolt gun would run about $60,000.00. Peter Hambraush is not building anymore of the 700 nitro bolts guns. His single shot 700 is about 45,000 and the double is about 75,000. He says the 700 bolt gun took too much time to build and it was not worth it. He will sell the existing 700 bolt gun if someone would actually want it. He also makes a 4 bore double rifle for about 116,000 dollars. All very well made guns, but also very expensive.