As tensions with North Korea flare in light of the news that they may have successfully produced a miniaturized nuclear warhead that can fit inside its missiles, everyone is scrambling to determine how seriously to take them.

Back in May, when North Korea began testing nuclear weapons with growing sophistication, Japan—vulnerable due to its proximity to North Korea and the fact that it hosts a number of U.S. military bases—saw a huge uptick in price inquiries on private nuclear shelters.  

Now that the U.S. President has threatened the communist country "with fire and fury like the world has never seen" and Kim Jong-Un has shot back with threats of an attack on Guam, we are seeing a similar increase as those in areas like Guam or California that are at high-risk of being effected in the event of an attack look into extreme safety measures.

In California, one company, Atlas Survival Shelters, has reported to receiving orders from both the U.S. and Japan and to selling over 30 units in the last few days. The company is currently sold out of its inventory and has had to go on back-order. Another company based in Texas offering underground shelters has seen a 90% surge in sales. They told the Miami Herald back in January that since Trump has been elected, the companies sales have been up 700 percent. 

Shelters of this sort can cost over $100,000 but even at the low-end, with a starting price point of about $10,000, this safety precaution will be too expensive for most people avoiding the effects of a nuclear explosion.