I remember when I had mine on the Escort done as a result of an MOT failure the garage that did the MOT gave me quite a hefty quote so I went to a garage my BiL recomended,who gave me a quote around half,using genuine Ford parts( I was sat next to the guy when he phoned up for the prices).When I asked how he could quote so cheaply he replied a lot of garages liked to change the whole arms as it was quite quick, a full set of bushes cost about a tenner and took a bit longer to change.He could make a profit and the customer saved a few bob so everyybody was happy.