Hi.  We also use Miguel, and in my opnionion the charge was not excessive compared with what I have paid in england for the same service.  He also arranged our transfer to Spanish plates, and whilst maybe more expense than doing it ourselves I did not have to worry about trying to arrange the whole operation in my poor Spanish or having to go to Tarragona. Interestingly, the car sailed through the ITV whereas in Egland I would probably have had to have a new everything - the beauty being that the ITV is done by someone who does not run a garage business and is interested in supplying everything that you would require to achieve a pass !!