Any motor factor will sell Marea shocks, not expensive. As noted they are easy to change so if you cant be bothered to do it yourself it wont cost a fortune at a garage. Use a small independant it might help if you let them supply as well as fit, they may get a trade price better than you will and it helps keep the total cost of the job down. Mareas ride pretty well so I dont think it's worth going for expensive shocks. If only they had put a smaller front anti roll bar on the car.