Caravan Serviceing

It seems quite rediculous to me that the charges for serviceing vans still under warranty are now well in excess of £200 for a single axle van. Unfortunately this cannot be avoided if you want to get your service book stamped to keep the warranty intact. All I would like done is brakes and running gear and a damp test, but it seems that is not sufficient for the manufacturer. Seems crazy to me that dealers remove brake drums, regrease bearings, clean and adjust brakes every year on vans that may have only covered 1000 miles or so in that year. When almost all the vans fittings only carry a 12 month warranty anyway, why should we have to have everything checked adding to the cost? anyone have any thoughts on this or am I just being mean?

prlds