Hmm you're right, bit of a tough one. I guess I meant that they're quite a good option bang for buck. Hell, the dealer quoted me circa $500 per shock for OEM Sachs, and $250-$270 per shock for Bilstein B4's. Personally unless the existing shocks were low km and one had a premature leak/fault, I would be swapping out all four. If two need replacing, the other two can't be too far away?