I think someone mentioned before that the manufacturers profit percentage has hardly changed. I've got no idea how chassis costs have changed but the materials for our house extension have drastically changed the past few years and I suspect labour costs have too.I find it hard to believe that a £70000 motorhome costs a Extra £9000 to build , I think a lot of the price increase is supply and demand, the bubble will burst, especially if it pees down with rain in next year's holiday period, I believe that not all buyers in the last couple years are dedicated Motorhomers like on here.