Billionaires are creating multi-million buck homes on mega-ranches. Sales agent Robb Nelson says it is a staunch property “Bonanza.” Feeble Fresh York Metropolis Mayor Michael Bloomberg paid $46 million for a 4,600-acre ranch in Colorado. A 41,000-acre ranch in South Dakota is going for $37 million. It entails 5 bedrooms, a truly equipped health membership and a house theater. The ranch will be a money maker with vegetation, over 2,000 cattle and thousands of untamed mustangs.