Sales of luxe doomsday bunkers up 1,000%

imageNEW YORK (CNNMoney) — A devastating earthquake strikes Japan. A massive tsunami kills thousands. Fears of a nuclear meltdown run rampant. Bloodshed and violence escalate in Libya.

And U.S. companies selling doomsday bunkers are seeing sales skyrocket anywhere from 20% to 1,000%.

Northwest Shelter Systems, which offers shelters ranging in price from $200,000 to $20 million, has seen sales surge 70% since the uprisings in the Middle East, with the Japanese earthquake only spurring further interest. In hard numbers, that’s 12 shelters already booked when the company normally sells four shelters per year.

“Sales have gone through the roof, to the point where we are having trouble keeping up,” said Northwest Shelter Systems owner Kevin Thompson.

UndergroundBombShelter.com, which sells portable shelters, bomb shelters and underground bunkers, has seen inquiries soar 400% since the Japanese earthquake. So far sales of its $9,500 nuclear biological chemical shelter tents are at an all-time high — with four sold in California last week, compared to about one a month normally.

Hardened Structures said inquiries have shot up about 20% since the earthquake — particularly for its apocalyptic 2012 shelters, radiation-protection tents, and nuclear, biological and chemical (NBC) air filters

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