Interessanter Artikel auf Englisch über den privaten Bunkerbau in den USA mit Preisangaben:
http://www.popularmechanics.co…ogy/design/a4600/4325649/
Den letzten Satz fand ich interessant:
"This should come as no surprise when you consider who's buying most of Packer's units. "I would say about 80 percent of our customers are either lawyers or physicians," Packer says. "These aren't survivalists running around in the woods. They're conservative bunches of people with their eyes open to threats. They understand deductive reasoning, and they're in the business of solving problems."