From what I have seen aftermarket mats cost more than OEM. The new MB mats have an embrodied star on the front mats, and the color match is dead on. Shortly after buying my '83 TD in 2001, I bought MB floormats and the color match was perfect. Any custom cut mats, with an embrodied logo is going to cost alot more than OEM mats. I got mine through Valley Motors in MD. All I did is mention that I saw their ad in the MBCA Star magazine and I got a $20 discount.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member