I would never bother with such a place.

There is a very nice small garage down the street from my house. The guy knows what he is doing and only charges $25 to change the oil on my friends truck. He is quick to, why bother messing with those Jiffy Lube idiots?

He does MB's as well. Of course since they use $50 worth of oil, the price is a bit different.
$75ish most certainly is a fair price for an oil change on one of these cars.
Figure $40-$50 for the oil, and $10-$15 for the filter.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200