The reason why most workshops charge so much is as follows. The materials for a body lift retail for $400 if you buy the kit from someone such as Zordo as most Nav owners do. You then have to pay either 1 - 2 people to fit the kit. Most workshops charge around $100/hour for time on a lift and the job of fitting a body lift kit would take a skilled fitter between 4 - 6 hours so $400 - $600. If two people are doing it it would take 3 - 4 hours but having to pay 2 wages puts the price up even more to around $600 - $800 just for labour. When you add up the cost of both labour and materials its easy to see how such a simple task can cost over $1000. A body lift is not just simply putting the blocks between the chassis and cab/tray but also lifting the bullbar and rear bar, adjusting the steering column and removing the fan shroud. As you can see all of these tasks take time hence the large amount of labour required for such a simple job. I hope this helps