Weathertech is without doubt the best designed rubber car mats manufactured in America and not available in retail car outlets in N.Ireland. For the full set of 4 mats you are likely to pay £120 plus postage.
They are expensive but you get what you pay for(10 year guarantee), they are simply the best car mat I have seen and fit the E class to perfection. They are hard wearing and these mats are in excellent condition with no sign of wear.
At less than half price gran yourself a bargin and treat your mercedes to to an interior facelift you will love them !