Jack (pictured, blue shirt) had seen the Marble Arch in London and thought it would be just the thing to spiff up his ranch in Montana; to his surprise, it was not for sale, at any price. What’s more, none of the home improvement stores back home–Lowe’s, Home Depot–had any plans available or ideas on how to build one; they couldn’t even suggest a contractor, although he found two offered on eBay and three on Craigslist for Nigeria.