I have recently had a service in a local garage and my off side rear shock has a quite a big leak. My local garage tried to source a replacement but was having a bit of trouble. I have done a bit of research and found that the shock could possibly cost me around £800, is this correct? The car is a 63 plate 7 seater. Does any one know if there is a cheaper conversion kit and if so are they ok for towing a caravan. I am just a little concerned that the other one could go soon also. The car is out of warranty by 3 weeks.