Cargo Containers are like legos!
You can make anything out of storage containers. I have seen the following applications: Shops-stacked two high on either side with a roof. Bunk houses, disaster housing, offices and much more. Sea cargo containers are strong enough to be loaded and stacked on ships. This is a great clip about cargo containers made into liveable space.
http://www.atlas-leasing.com/modern-...ner-city.xhtml
Someone else mentioned pricing. Prices are set according to market. I rent and sell in Atlanta, GA area. I am happy to give advice if you are looking in another part of the country.