http://fifthwheelco.com/celtic-rambler/ very very expensive and no choice on size or layout. 5th Wheel units here are used often as statics or are hired out for living space at Music Festivals and Events. The road system and capable tow trucks are also a limiting factor. Keep in mind we are paying about $6.5 a US gallon for petrol and more for diesel.
There is a huge amount of tax added onto fuel prices in Europe.